HUM Nutrition Hair Strong Review
Hair Strong by HUM Nutrition is a clinically proven formula designed for Hair + Nails to support improved hair growth, fuller hair, and stronger hair. Rather than only testing individual ingredients, HUM Nutrition tests its bestselling formulas in randomized, placebo-controlled human clinical trials to ensure rigorous science and measurable results. In clinical studies of this formula, 94% of participants saw improved hair strength and 89% self-reported faster hair growth. The supplement is formulated by RD Nutritionists using verified clean ingredients and clinically tested actives. Every batch is triple tested and third-party validated for purity and quality, and the formula is completely free of The Tricky 12, containing no artificial colors, sweeteners, flavors, or preservatives. What's inside Hair Strong includes six primary active components tailored for hair follicle and strand health. First, Biotin serves as a key nutrient in maintaining the health of both hair and nails. Second, Vitamin B12 is included because studies suggest that this vitamin can play an important role in supporting healthy hair follicles. Third, adequate amounts of Folic Acid are provided, as they are key for healthy hair growth. Fourth, Zinc is incorporated as a vital mineral necessary for healthy hair follicles. Fifth, Fo-Ti, an herb used in traditional Chinese medicine, is included to support healthy hair growth and boost natural hair color. Sixth, PABA is added because some evidence shows that it can help maintain natural hair color. According to the product FAQs, Hair Strong Capsules and Hair Strong Gummies offer the exact same clinically tested formula for improved hair growth, meaning it is not necessary to take both and customers should simply choose one formula to support healthier hair. However, Hair Strong Capsules can be taken alongside HUM Nutrition's Red Carpet, as they make a great duo where Hair Strong Capsules improve hair strength and growth while Red Carpet nourishes hair follicles for healthy hair.
Study, Trial or Testing Result Summary
MembersHuman studies
1 of these 59 human studies gave the ingredient by injection, not by mouth.
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Review Totals and Summary
Members1,613 reviews
Biohacker Summary
MembersWhat our biohacker panel says
RAL Summary
MembersThe tier and why
More Details
MembersBody systems · Combine with · Possible side effects
Supplement Facts
Folate 500 mcg DFE · Vitamin B12 850 mcg · Biotin 5000 mcg
| Folate (from folic acid) | 500 mcg DFE | 125% |
| Vitamin B12 (as methylcobalamin) | 850 mcg | 35,417% |
| Biotin (as d-biotin) | 5,000 mcg | 16,667% |
| Zinc (as zinc citrate) | 20 mg | 182% |
| PABA (Para-aminobenzoic acid) | 15 mg | † |
| Fo-Ti (Polygonum multiflorum) root extract | 10 mg | † |
Other ingredients: Hypromellose (capsule), rice flour, organic rice bran extract.
Directions: Take 1 capsule daily.
Label source: Vitacost · Report a label change
Where to Buy
HUM Nutrition · Target
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Graded October 26, 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.

