Stonehenge Health Dynamic Hair Energy for Women Add 6 Bottles Review

Hair health starts beneath the scalp, at the follicle, the living structure where every strand originates. The page explains that most people think of hair loss as a surface problem, but the real story is cellular. Hair follicles are among the most metabolically active structures in the body and need significant energy to sustain continuous hair production. When that energy falters, or when scalp hormones, nutrients, or blood flow are off, the hair cycle tips toward shedding. Dynamic Hair Energy for Women is presented as the answer to that process. At its core is the BioActive Growth MultiSystem, a targeted blend designed to support healthy mitochondria in follicle cells so they can function efficiently, generate the energy they need, and help maintain conditions for stronger, fuller-looking hair over time. The page states that the energy in the name is a description of what follicles need to thrive rather than a marketing term. The brand says most hair supplements target one or two causes of shedding, while this formula addresses four: scalp hormonal balance, cellular energy, the right nutrients, and strong blood flow. The product is described as built for women who want to feel vibrant and confident and whose hair no longer feels like their own. Key benefits listed include supporting stronger, fuller-looking hair, visibly reduced hair shedding, promoting hair growth, volume and thickness, and providing follicle nutrition. The suggested use is two capsules once daily with water, with a pro tip to take it with a meal containing healthy fat because many key nutrients are fat-soluble. The label notes a serving size of 2 capsules and 30 servings per container, with a caution not to exceed 2 capsules per day, not intended for children, and advice to consult a healthcare professional if pregnant, nursing, or taking medication. The product is manufactured in the USA, distributed by Stonehenge Health in Newport Beach, CA, and carries a 90-day money-back guarantee. Ingredient highlights include Serevelle saw palmetto, Yuth spermidine, EVNolMax tocotrienol and tocopherol complex, eggshell membrane powder, chastetree berry, horsetail, grape seed, green tea and citrus extracts, plus iron, biotin, zinc and B vitamins. A timeline suggests early changes in weeks 4 to 8 and months 2 to 3, with measurable results around months 3 to 6, and the page notes that individual results may vary.

Product Focus: Hair GrowthAlso covers:SkinHormones
Tier ⓘ
Tier 2 · Rank 3
Tier 2 · Researched. Human studies show improvement in an aging-related function or a specific goal, and the reviews agree. Rank 3 within Tier 2 for Hair Growth; 3 of 52 overall. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
84 /100
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
87% of 111
Biohacker Mentions
10 of 10
Cost per month
$26

Study, Trial or Testing Result Summary

Members Only94 human studies · 37 improved

5 of these 94 human studies gave the ingredient by drip or injection, not by mouth.

94 human studies37 improved51 no effect880,984 people studied

Biotin is the one ingredient here at or above a studied dose. A 2025 randomized trial in 105 adults found that 1.25 mg of biotin daily for 90 days reduced hair fall and sped hair growth, with no side effects reported [1]. Results elsewhere are weaker: after weight-loss surgery, 1000 micrograms daily helped only 23% of women low in biotin [2]. Zinc is below the studied dose. In women with polycystic ovary syndrome, 50 mg a day reduced hair loss in 41.7% versus 12.5% on placebo [3]. This product gives 10 mg. Vitamin E is a trace amount. The trial that helped hair used 100 mg of tocotrienols [4]. The niacin studies tested creams and foams on the scalp, not pills [5]. Iron helped mainly in women who were low in iron [6]. Vitamin D studies mostly tested injections or creams [7]. No trial has shown that folate or vitamin B12 pills help hair [8][9]. Saw palmetto, chasteberry, green tea and the other extracts sit in two blends whose amounts are hidden. No studies of these blends were given. Animal and cell studies are never counted.

See all 94 studies →Hide the studies

Review Totals and Summary

Members Only111 reviews · 87% positive
111 reviews · Stonehenge Health 60 · Trustpilot 51
87% positive10% neutral3% negative

The store shows 60 ratings in total, and the themes below come from the written reviews that could be read on its page. Those reviews cover the capsules; no other forms of the product were mentioned, so none had to be left out. The written feedback is overwhelmingly positive, and the most common theme is less shedding. Several reviewers say they noticed less hair in the shower, in their brush and on the floor after a few weeks to a few months of use. They also say their hair feels thicker and healthier. Regrowth is the second big theme. Some buyers with thinning at the part or a bald spot report new growth. One reviewer says a bald spot on the left front of the head was covered after about two months. Another describes new growth where hair had been thinning at the part. One reviewer uploaded before and after photos showing the change around the part. One reviewer had shedding caused by an estrogen blocker after breast cancer treatment. She reports new, healthier hair that now grows lower than her waist. She also mentions stronger nails and healthier skin as added bonuses. Several reviewers were skeptical at first because they had already tried over-the-counter foams and biotin supplements. They say about 90 days of use showed clear results. In general, reviewers report that results took one to three months to appear and came gradually rather than immediately. Anyone expecting a quick change should keep that timeline in mind. Some buyers praise the product as a natural alternative to prescribed medication. A few say a spouse or partner liked it too. Overall, reviewers have a sense that the supplement works for many women. The one caution comes from a store reply to the breast cancer reviewer. Stonehenge Health advises speaking with an oncologist first, because chasteberry is generally avoided by women with a history of breast cancer unless approved. It suggests the men's product instead. This is the only safety point raised in the written feedback, and it matters for anyone with a similar medical history. Few complaints about taste, size or side effects appear in the visible reviews, and the summaries give no detail on value or price. Only the first set of written feedback is shown on the page, so it does not give a full range of critical opinions. The lack of complaints should therefore be read with some care. As for who it seems to suit, the reviewers are mostly women dealing with shedding, thinning at the part or small bald spots. They include women whose shedding followed medical treatment, and people who had not got results from foams or biotin. The product also appeals to those wanting a natural option rather than a prescription. Women with a history of breast cancer should get approval from their oncologist before taking it. In short, the written themes are less shedding, new growth, thicker-looking hair and gradual results over one to three months, with the chasteberry caution as the single safety flag.

Biohacker Summary

Members Only10 of 10 recommend it
10 of 10 biohackers on our panel recommend it

The panel is split on biotin, the main ingredient: two of the ten recommend it, for keratin production and stronger hair and for hair follicle health and growth, and one of them points to eggs, almonds and salmon as food sources. Three others warn, and the cautions are different ones: one says biotin is a little overhyped and that enough protein is probably more useful for hair, skin and nails, while two say biotin can interfere with blood tests for testosterone and estrogen, so it should be avoided before those tests. The remaining five are neutral and only mention it, for example saying it helps clear oxalates, is low in some people, or is listed with a clear dose on some labels. Nobody gave a dose or a preferred form of biotin, and nobody said they stopped taking it. Vitamin D is a smaller ingredient in this product and drew the most support of the others, mostly from panelists who recommend getting enough of it.

See all 10 biohackers →Hide the biohackers
  • Dr. Eric Berg · Biotin · neutral
    • 26 Sep 2026 · neutral · Facebook ↗
      States that thinning hair often indicates low biotin, which is required to produce keratin for hair, skin, and nails.
    • 2 Nov 2026 · Vitamin D · warns · Facebook ↗
      Dr. Berg warns that the recommended daily intake for vitamin D is based on a massive error and that the actual necessary amount is closer to 8,895 IU, with millions remaining deficient.
    • 31 Oct 2026 · Vitamin D · recommends · YouTube ↗
      Recommends getting vitamin D levels tested to ensure they are between 50 and 70, as vitamin D is intimately involved in regulating prostate size.
    • 31 Oct 2026 · Zinc · recommends · YouTube ↗
      Recommends ensuring sufficient zinc intake because the prostate needs enough zinc for the conversion from testosterone to DHT to be smooth and optimized.
    • 30 Oct 2026 · Vitamin D · recommends · YouTube ↗
      Recommends taking at least 10,000 IUs of vitamin D3 every single day in the winter, stating it is the most important vitamin to lower cancer risk.
    • 30 Oct 2026 · Vitamin D · recommends · YouTube ↗
      Recommends vitamin D to support the immune system, aiming for blood levels between 80 to 100 ng per ml.
    • 30 Oct 2026 · Iron · neutral · YouTube ↗
      Identifies iron as the Achilles' heel of cancer, as it is needed for its DNA to replicate.
    • 25 Oct 2026 · Vitamin D · recommends · YouTube ↗
      Recommends taking no less than 10,000 IU's of vitamin D3 for osteoporosis, alongside magnesium and K2.
    • 25 Oct 2026 · Vitamin D · recommends · X ↗
      Recommends increasing vitamin D to restore balance and support healthy blood pressure.
    • 24 Oct 2026 · Vitamin D · neutral · YouTube ↗
      States that a lack of vitamin D can potentially cause achy bones or crashing mood.
    • 24 Oct 2026 · Zinc · recommends · YouTube ↗
      Recommends taking zinc carnosine for an ulcer or some type of gastric problem.
    • 23 Oct 2026 · Vitamin D · recommends · YouTube ↗
      States that vitamin D is intimately involved in the immune system and recommends taking at least 10,000 IUs each day.
    • 23 Oct 2026 · Zinc · recommends · YouTube ↗
      Emphasizes the importance of zinc for decreasing viral replication and recommends taking 40 to 60 mg every single day.
    • 21 Oct 2026 · Vitamin D · recommends · YouTube ↗
      States that taking high doses of vitamin D3 for 14 days can improve mood, sleep, low back pain, skin issues, and blood pressure, as well as act as a natural anti-inflammatory and reduce susceptibility to sickness.
  • Thomas DeLauer · Biotin · warns
    • 13 Jun 2026 · warns · YouTube ↗
      Thinks biotin is a little overhyped, suggesting that consuming adequate protein is probably more effective for hair, skin, and nails. He notes that some people might be deficient, especially if consuming a lot of eggs with avidin, but doesn't consider it the 'Mecca of perfect hair'.
    • 23 Oct 2026 · Zinc · uses · YouTube ↗
      Adds zinc to their immunity duo because it helps them absorb vitamin C, considering the two together a fantastic combination for fall and winter.
    • 23 Oct 2026 · Vitamin D · uses · YouTube ↗
      Uses vitamin D3 in the fall and winter months when getting less sun, as it's important to supplement it then.
    • 20 Oct 2026 · Vitamin D · recommends · YouTube ↗
      Recommends taking a massive amount of vitamin D simultaneously with an early morning massive breakfast to help reset circadian rhythms and address hyperphagia.
    • 18 Oct 2026 · Vitamin B12 · recommends · YouTube ↗
      Recommends Vitamin B12 for mental health and mood, explaining its role in myelination and neurotransmitter production. They specifically recommend a liposomal and micellar form of methylcobalamin B12 for better absorption and to avoid toxicity.
    • 8 Oct 2026 · Zinc · recommends · Facebook ↗
      Recommends zinc, noting it is a cofactor for enzymes that build neurotransmitters, and deficiency can affect mood, happiness, and motivation.
    • 8 Oct 2026 · Vitamin D · recommends · Facebook ↗
      Recommends Vitamin D, stating that it has receptors throughout the brain and deficiency can quickly impact brain and mood.
    • 6 Oct 2026 · Vitamin D · uses · YouTube ↗
      Takes supplemental vitamin D because he is skin sensitive and from northern latitudes, limiting his UV exposure.
    • 5 Oct 2026 · Vitamin D · recommends · YouTube ↗
      Recommends taking vitamin D on non-liver days to ensure both nutrients get proper receptor access.
    • 3 Oct 2026 · Zinc · neutral · YouTube ↗
      Mentions that more zinc could be beneficial for testosterone, but it's not working on the axis that most people need help with.
    • 29 Sep 2026 · Vitamin D · uses · YouTube ↗
      Takes Purity's liquid vitamin D3 with K2 because she is constantly inside during the day; D3 is for overall wellness and K2 helps the body absorb calcium properly.
    • 18 Sep 2026 · Zinc · neutral · Facebook ↗
      Compares zinc content, noting salmon has under 1mg while oysters have 74mg per 100g, a 70x difference.
    • 18 Sep 2026 · Iron · neutral · Facebook ↗
      Compares iron content in spinach (2.7mg) and beef (2.6mg), but emphasizes that beef's heme iron absorbs at about 25%, while spinach's non-heme iron absorbs at 2-8%.
    • 11 Sep 2026 · Vitamin D · recommends · YouTube ↗
      Recommends getting vitamin D, suggesting it can be obtained while walking.
  • Dave Asprey · Biotin · neutral
    • 14 Apr 2026 · neutral · TikTok ↗
      States that biotin clears out oxalates.
    • 1 Nov 2026 · Vitamin D · uses · Facebook ↗
      Takes Vitamin DAKE from Suppgrade Labs.
    • 25 Oct 2026 · Vitamin D · recommends · Podcast ↗
      Suggests that vitamin D supports brain health, muscle function, and focus.
    • 17 Oct 2026 · Folate · neutral · Facebook ↗
      States that folate can affect how the body responds to a supplement.
    • 9 Oct 2026 · Vitamin D · recommends · Podcast ↗
      Host Dave Asprey explains why correcting a vitamin D deficiency still makes sense for male fertility, even though supplementation did not improve overall semen parameters in a randomized trial.
    • 7 Oct 2026 · Vitamin D · uses · YouTube ↗
      States that currently, he is only taking vitamin C and vitamin D.
    • 7 Oct 2026 · Vitamin E · uses · YouTube ↗
      Dave Asprey's kids get a little bit of vitamin E every day, which helps to stabilize the bad oils they get when eating at restaurants.
    • 7 Oct 2026 · Zinc · uses · YouTube ↗
      Developed a nonnano zinc sunscreen over five years, stating her skin is probably better now than it's ever been.
    • 5 Sep 2026 · Vitamin D · recommends · YouTube ↗
      Recommends vitamin D, noting it's actually a hormone and that most people are deficient, even those who take it, because they don't take enough.
    • 3 Sep 2026 · Vitamin D · recommends · YouTube ↗
      States that most people on the spectrum are low in vitamin D and need more of it, mentioning his own product, Vitam DAKNE, which contains real vitamin A.
    • 3 Sep 2026 · Zinc · recommends · YouTube ↗
      Emphasizes the importance of having enough zinc before trying advanced longevity strategies like peptides.
    • 1 Sep 2026 · Zinc · recommends · YouTube ↗
      Suggests that zinc has better safety and protective data than meds for reducing cardio respiratory risk.
    • 29 Aug 2026 · Vitamin D · recommends · YouTube ↗
      Dave Asprey recommends Vitamin D3 with K2, explaining D3 is a hormone made from sunlight and K2 directs calcium into bones, not arteries, highlighting its low cost, widespread deficiency, and the ability to test its effectiveness.
    • 18 Aug 2026 · Vitamin D · recommends · YouTube ↗
      Recommends Vitamin D as one of the most important supplements for overall health.
  • Andrew Huberman · Biotin · neutral
    • 13 Apr 2026 · neutral · Podcast ↗
      Mentions biotin.
    • 29 Oct 2026 · Zinc · uses · YouTube ↗
      Zinc carnosine to support and improve the lining of your gut.
    • 26 Oct 2026 · Zinc · uses · YouTube ↗
      Notes that AG1 Pro contains zinc carnosine to support and improve the lining of the gut.
    • 19 Oct 2026 · Zinc · recommends · YouTube ↗
      States that AG1 Pro contains zinc carnosine to support and improve the lining of the gut.
    • 12 Oct 2026 · Zinc · uses · YouTube ↗
      Uses AG1 Pro, which contains zinc carnosine to support and improve the lining of the gut.
    • 28 Sep 2026 · Zinc · uses · YouTube ↗
      States that AG1 Pro contains zinc carnosine to support and improve the lining of the gut, and he was already taking some of these ingredients separately.
    • 21 Sep 2026 · Zinc · uses · YouTube ↗
      States that AG1 Pro includes zinc carnosine, which he was already taking separately, to support and improve the lining of the gut.
    • 21 Sep 2026 · Vitamin D · neutral · YouTube ↗
      Notes that most people are probably deficient in vitamin D and benefit from supplementing, but there's no point in doing it unless you're deficient for most things.
    • 14 Sep 2026 · Zinc · uses · YouTube ↗
      Personally takes zinc carnosine, which is included in AG1 Pro to support and improve the lining of the gut.
    • 31 Aug 2026 · Zinc · uses · YouTube ↗
      AG1 Pro has zinc carnosine to support and improve the lining of your gut. Some of these ingredients I personally was already taking separate from the AG1 formula.
    • 24 Aug 2026 · Zinc · recommends · YouTube ↗
      States that AG1 Pro contains zinc carnosine to support and improve the lining of your gut.
    • 17 Aug 2026 · Zinc · uses · YouTube ↗
      Uses AG1 Pro, which contains zinc carnosine to support and improve the lining of the gut.
    • 7 Aug 2026 · Vitamin D · uses · X ↗
      Takes 5,000 IU of Vitamin D3 in the morning for longevity.
    • 20 Jul 2026 · Vitamin D · uses · X ↗
      Takes 5000 IU of Vitamin D3 in the morning for general health.
  • Siim Land · Biotin · neutral
    • 8 Nov 2025 · neutral · YouTube ↗
      Siim Land's company has published papers and filed patents for improvement in mitochondria in the skin using their core mitochondrial approach and other things like biotin.
    • 31 Oct 2026 · Vitamin D · recommends · YouTube ↗
      Advises against taking vitamin D in the morning with other supplements because it is fat soluble and requires dietary fat for better absorption.
    • 29 Oct 2026 · Vitamin D · recommends · Instagram ↗
      Recommends taking Vitamin D with fat for better absorption.
    • 24 Oct 2026 · Vitamin D · neutral · Instagram ↗
      States that Vitamin D connects biology to light and that UVB reaching the skin enables its production.
    • 14 Oct 2026 · Iron · neutral · Instagram ↗
      Mentions that iron is a mineral necessary for making collagen.
    • 6 Sep 2026 · Vitamin D · recommends · Instagram ↗
      Thinks vitamin D has some of the strongest evidence and is worth considering.
    • 6 Sep 2026 · Vitamin D · neutral · X ↗
      Notes that Vitamin K2 pairs well with vitamin D by regulating calcium and bone mineralization.
    • 3 Sep 2026 · Iron · warns · YouTube ↗
      States that excess iron promotes oxidative stress and inflammation, which increases heart disease risk.
    • 26 Aug 2026 · Vitamin D · recommends · Instagram ↗
      Recommends taking vitamin D supplements with some fat to maximize its absorption, suggesting with food or a teaspoon of olive oil.
    • 23 Aug 2026 · Vitamin D · neutral · X ↗
      Notes that taking vitamin D3 with a fat-containing meal resulted in 32% higher peak blood vitamin D levels.
    • 17 Aug 2026 · Vitamin D · recommends · X ↗
      Recommends taking Vitamin D in the morning or at lunch with fat.
    • 14 Aug 2026 · Vitamin D · neutral · X ↗
      Notes that Boron improves vitamin D.
    • 5 Aug 2026 · Vitamin D · recommends · YouTube ↗
      Recommends Vitamin D because microglia contain Vitamin D receptors, and Vitamin D helps keep the immune system properly regulated, with low levels associated with greater neuroinflammation and a higher risk of autoimmune conditions.
    • 5 Aug 2026 · Zinc · recommends · YouTube ↗
      States that deficiencies in nutrients such as zinc can impair normal immune regulation.
  • Dr. Rhonda Patrick · Biotin · warns
    • 9 Sep 2025 · warns · YouTube ↗
      Advises avoiding biotin-containing supplements before a testosterone blood test as they can cross-detect with estrogens and confound results.
    • 5 Oct 2026 · Vitamin D · neutral · Facebook ↗
      Vitamin D supplementation was linked to a 40% lower risk of dementia in an observational study of more than 12,000 older adults.
    • 30 Sep 2026 · Vitamin D · recommends · YouTube ↗
      Mentions that vitamin D also plays a role in maintaining muscle mass.
    • 29 Sep 2026 · Zinc · recommends · YouTube ↗
      Notes that not getting enough zinc can affect testosterone, as zinc is very important for testosterone synthesis.
    • 28 Sep 2026 · Vitamin D · recommends · YouTube ↗
      Recommends ensuring adequate vitamin D intake for men's sperm health.
    • 28 Sep 2026 · Zinc · recommends · YouTube ↗
      Recommends men take a 30 milligram zinc supplement for sperm health when preparing for IVF.
    • 28 Sep 2026 · Folate · recommends · YouTube ↗
      Recommends ensuring adequate methyl folate intake, ideally through a prenatal vitamin, for women preparing for IVF.
    • 24 Sep 2026 · Vitamin D · neutral · Facebook ↗
      Vitamin D and strength training alone did not, but adding them strengthened the effect on one clock, with the full combination slowing that measure by ~3.8 months.
    • 25 Aug 2026 · Vitamin D · neutral · Facebook ↗
      Lutein and zeaxanthin can also be obtained from certain multivitamins.
    • 25 Aug 2026 · Vitamin E · neutral · Facebook ↗
      Lutein and zeaxanthin can also be obtained from certain multivitamins.
    • 21 Aug 2026 · Zinc · neutral · Instagram ↗
      Discusses findings from a meta-analysis on zinc supplementation, noting it improved insulin resistance, inflammation, and oxidative stress in people with diabetes or prediabetes, and explains its biological role in the pancreas.
    • 28 Jul 2026 · Vitamin D · recommends · Facebook ↗
      Recommends Vitamin D, noting it regulates over 5% of the genome, including genes involved in immune defense, neurotransmitter synthesis, and longevity, and correcting deficiency may slow epigenetic aging.
    • 22 Jul 2026 · Vitamin D · neutral · YouTube ↗
      Uses Vitamin D3 as an example of a supplement that an AI model could track to see its impact on other metrics like glucose levels.
    • 26 Jun 2026 · Vitamin D · recommends · Facebook ↗
      Recommends Vitamin D, explaining that it regulates over 5% of the genome, including genes involved in immune defense, neurotransmitter synthesis, and longevity.
  • Peter Attia · Biotin · warns
    • 11 May 2025 · warns · YouTube ↗
      Warns that biotin, found in many supplements, can completely obscure findings and render a non-LCMS test for estradiol and testosterone irrelevant due to interference with ELISA-based assays.
    • 4 Jan 2026 · Vitamin D · uses · YouTube ↗
      Lists vitamin D as one of her staple supplements.
    • 4 Jan 2026 · Zinc · recommends · YouTube ↗
      Suggests that zinc and magnesium could potentially help with vasodilation and sleep, particularly for women experiencing severe symptoms in the luteal phase.
    • 16 Nov 2025 · Vitamin D · neutral · YouTube ↗
      Notes that several studies show patients taking vitamin D can reduce TPO levels and prolong the honeymoon period of Hashimoto's disease.
    • 6 Aug 2025 · Vitamin D · neutral · YouTube ↗
      States that in mouse studies, there was a combined effect of alpha ketoglutarate with vitamin D for both sexes.
    • 3 Aug 2025 · Vitamin D · neutral · YouTube ↗
      Uses vitamin D as an example of how people might dismiss its efficacy due to failed clinical trials that didn't adjust the dose or measure levels.
    • 20 Jul 2025 · Vitamin D · neutral · YouTube ↗
      In mouse studies, Peter Attia's team found a combined effect of AKG with Vitamin D for both sexes.
    • 10 Jul 2025 · Vitamin D · neutral · YouTube ↗
      Suggests that supplementing with lots of vitamin D might help overcome the negative effects of phenytoin on bone health by improving calcium absorption, though he is unaware of studies on this.
    • 9 Jul 2025 · Vitamin D · recommends · YouTube ↗
      Recommends Vitamin D3 as one of the 'big three' micronutrients for bone health, suggesting a daily intake of 800 to 1,000 IU, which can be obtained through sunlight or supplementation.
    • 6 Jul 2025 · Vitamin D · neutral · YouTube ↗
      Suggests that supplementing with lots of vitamin D might overcome the negative effects of phenytoin on bone health by counteracting increased catabolism of vitamin D and subsequent decreased calcium absorption.
    • 29 Jun 2025 · Niacin · uses · YouTube ↗
      Peter Attia's AVIA Skincare vitamin C serum also contains niacinamide, which is useful to apply to the skin right after washing.
    • 8 Jun 2025 · Vitamin D · recommends · YouTube ↗
      Recommends vitamin D for people who tend to be vitamin D deficient, such as those living in Portland, Oregon.
    • 8 Jun 2025 · Iron · recommends · YouTube ↗
      Recommends iron supplements for women of reproductive age who are iron deficient.
    • 17 Mar 2025 · Vitamin D · neutral · Instagram ↗
      Discusses evaluating vitamin D, understanding deficiency, and optimal levels.
  • Ben Greenfield · Biotin · recommends
    • 22 Feb 2025 · recommends · YouTube ↗
      Recommends biotin (Vitamin B7) for supporting keratin production and strengthening hair, noting it can be found in eggs, almonds, and salmon.
    • 29 Oct 2026 · Zinc · warns · YouTube ↗
      Ben Greenfield's formulation includes 30 grams of zinc a day, taken for one week before surgery and two weeks after, as it is an important cofactor for wound healing.
    • 29 Oct 2026 · Vitamin E · neutral · YouTube ↗
      Mentions a recent study showing no significant increase in bleeding for patients on Vitamin E supplementation during open heart surgery, which was interesting for him to learn.
    • 29 Oct 2026 · Vitamin D · recommends · YouTube ↗
      Notes that Vitamin D is actually a hormone and recommends patients aim for levels around 40 to 50, or even 60 for fracture healing, for optimal healing, as opposed to just above 20 which is considered normal.
    • 15 Oct 2026 · Vitamin D · recommends · Podcast ↗
      Mentions vitamin D as part of a bare-minimum protocol.
    • 15 Oct 2026 · Vitamin D · recommends · YouTube ↗
      Advises getting vitamin D levels between 60 and 100 nanograms per milliliter as a minimum step for overall health and to slow down heart disease.
    • 12 Oct 2026 · Folate · recommends · Facebook ↗
      Recommends methylfolate as an active form of folate that the body can use directly without conversion.
    • 10 Oct 2026 · Zinc · recommends · YouTube ↗
      Emphasizes that zinc sufficiency is crucial for immunity because the thymus-derived peptide thymulin, which trains lymphocytes, requires zinc to be active.
    • 19 Sep 2026 · Zinc · recommends · YouTube ↗
      Recommends adding zinc into one's stack because it is a co-factor for enzymes involved in testosterone synthesis and sperm maturation, and zinc deficiency is a reproducible cause of low sperm count.
    • 19 Sep 2026 · Zinc · neutral · Podcast ↗
      He mentions zinc as a supplement with real human data behind it for male fertility.
    • 8 Sep 2026 · Zinc · neutral · X ↗
      Zinc may support both testosterone and sperm count.
    • 29 Aug 2026 · Niacin · neutral · YouTube ↗
      States that Nrf2 activators, when combined with something like niacin, may have a good effect on plaque progression.
    • 20 Aug 2026 · Vitamin D · uses · YouTube ↗
      Has been taking Vitamin D3 K2 for over a decade.
    • 15 Aug 2026 · Zinc · warns · YouTube ↗
      Warns that he was taking so much zinc without realizing it because it was in five different things he was taking, and he couldn't pinpoint the problem.
  • Dr. Mark Hyman · Biotin · recommends
    • 6 Dec 2024 · recommends · YouTube ↗
      Recommends supplementing with biotin for hair follicle health and growth.
    • 26 Oct 2026 · Vitamin D · recommends · Facebook ↗
      Recommends Vitamin D for health, stating that amazing things happen when patients' vitamin D statuses reach optimal levels.
    • 21 Oct 2026 · Vitamin D · neutral · YouTube ↗
      Mentions vitamin D as an existing biomarker that plays a role in mental health, which Function Health includes in their measurements.
    • 21 Oct 2026 · Iron · neutral · YouTube ↗
      Mentions iron as an existing biomarker that plays a role in mental health, which Function Health includes in their measurements.
    • 21 Oct 2026 · Folate · neutral · YouTube ↗
      Notes that taking folate can lower homocysteine levels, which has shown health benefits and physical improvements in brain scans in clinical trials.
    • 19 Oct 2026 · Vitamin D · neutral · YouTube ↗
      Notes that vitamin D plays a role in immune function.
    • 19 Oct 2026 · Folate · neutral · YouTube ↗
      Notes that some people may need a little bit extra folate with a supplement.
    • 8 Oct 2026 · Vitamin D · recommends · Instagram ↗
      Recommends checking vitamin D levels and states that if they had to pick one single intervention for immune health, vitamin D would be it.
    • 7 Oct 2026 · Vitamin D · neutral · Podcast ↗
      Dr. Hyman discusses vitamin D in relation to sun exposure patterns.
    • 7 Oct 2026 · Vitamin D · recommends · YouTube ↗
      States that vitamin D supplementation can help with oxidative stress.
    • 7 Oct 2026 · Zinc · uses · YouTube ↗
      Gave a patient with psoriatic arthritis a little zinc, which contributed to significant improvement in her condition.
    • 5 Oct 2026 · Vitamin D · neutral · Podcast ↗
      Mentions vitamin D as a key nutrient for supporting immune function.
    • 5 Oct 2026 · Vitamin D · recommends · YouTube ↗
      States that vitamin D is probably the single most important intervention for immune health, recommending levels of 45 to 70 and emphasizing testing to determine the right dose.
    • 5 Oct 2026 · Zinc · recommends · YouTube ↗
      Recommends ensuring adequate zinc intake on a regular basis for immune support, noting some data on zinc lozenges for early cold.
  • Bryan Johnson · Biotin · neutral
    • 5 Sep 2024 · neutral · YouTube ↗
      Mentions biotin as an example of an ingredient that AG1 lists with a specific dose, but then contrasts it with other ingredients in proprietary blends where doses are not disclosed.
    • 22 Oct 2026 · Vitamin D · uses · X ↗
      Takes 5000 IU of Vitamin D3 in the morning for general health.
    • 15 Aug 2026 · Vitamin D · uses · X ↗
      Takes 5000 IU of Vitamin D3 in the morning for general health.
    • 8 Jul 2026 · Iron · stopped · YouTube ↗
      Has had low iron for 11 years and despite eating meat and trying all forms of iron supplementation at different times and sequences, none of it worked to raise his iron or ferritin levels.
    • 7 Jul 2026 · Iron · uses · X ↗
      Had low iron for 11 years, with ferritin averaging 38 ng/mL, and has finally boosted it back to healthy levels.
    • 3 Jul 2026 · Vitamin D · neutral · X ↗
      Mentions that the sunlight assessment claims low vitamin D levels cause the immune system to misfire, and notes that their vitamin D has been measured.
    • 4 May 2026 · Vitamin D · uses · X ↗
      Takes 5000 IU of Vitamin D3 in the morning for longevity.
    • 4 May 2026 · Zinc · uses · X ↗
      Takes 15 mg of Zinc in the morning for longevity.
    • 2 May 2026 · Vitamin D · uses · X ↗
      He takes 5000 IU of Vitamin D3 in the morning for general health.
    • 21 Apr 2026 · Vitamin D · uses · X ↗
      Takes 5000 IU of Vitamin D3 in the morning for general health.
    • 15 Apr 2026 · Vitamin D · uses · X ↗
      Takes 5,000 IU of Vitamin D3 in the morning for longevity.
    • 14 Apr 2026 · Vitamin D · uses · X ↗
      Takes 5,000 IU of Vitamin D3 in the morning.
    • 14 Apr 2026 · Zinc · uses · X ↗
      Takes 15 mg of Zinc in the morning.
    • 8 Apr 2026 · Vitamin D · uses · X ↗
      Takes 5,000 IU of Vitamin D3 in the morning.

RAL Summary

Members OnlyTier 2 for Hair Growth

A randomized trial found that biotin, at a lower dose than this product's 2500 mcg, reduced hair fall and sped growth [1], and 87% of 111 reviews are positive. The rules cited niacin, but those studies used niacin on the scalp, not by mouth, so the biotin trial is what supports this tier.

Where the evidence disagrees: 51 of the 94 human studies found no effect.

More Details

Members OnlyBody systems · Combine with · Possible side effects

Body systems: Skin, hair and nails, Endocrine system, Blood

Combine with: For hair support, pair it with collagen peptides, vitamin C (needed for collagen synthesis), iron if ferritin is low (confirm with a blood test), zinc, and omega-3 fatty acids for scalp health. If mood support is also a goal, add a separate mood-focused product, such as omega-3 EPA/DHA, vitamin D (if deficient), magnesium glycinate, saffron extract, or a B-complex with methylfolate. Talk to a healthcare provider before combining these with meds or other medications, especially 5-HTP, St. John's wort or SAMe, which can interact.

Possible side effects: The biotin trial reported no side effects. The company advises women with a history of breast cancer to ask their oncologist before use, because the product contains chasteberry. It also contains egg.

Supplement Facts

Vitamin D3 15 mcg · Vitamin E 0.77 mg · Niacin 15 mg
Supplement Facts
Serving Size 2 Capsules
Servings Per Container 30
Amount Per Serving% Daily Value
Vitamin D315 mcg
Vitamin E0.77 mg
Niacin15 mg
Vitamin B61.7 mg
Folate400 mcg DFE
Vitamin B1210 mcg
Biotin2,500 mcg
Iron8 mg
Zinc10 mg
BioActive Growth MultiSystem0†
FollicleFlow BioComplex0†
† Daily Value not established.

Other ingredients: Vegetable Capsule (Hypromellose).

Directions: Take 2 Capsules Daily With Water

Label source: Reverseagelab · Report a label change

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Our articles on this subject

Graded November 5, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.