Hair Collagen + Keratin Review

Youtheory Hair Collagen + Keratin received a product quality score of 95/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 3 active ingredients All 2 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Youtheory, holds a brand trust score of 89/100.

Youtheory Hair Collagen + Keratin contains 3 active ingredients: Biotin (3,000 mcg), Hydrolyzed Collagen (3,000 mg), Hydrolyzed Keratin (Cynatine®) (500 mg). Notable high-dose ingredients include Biotin at 10,000% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

GoodSupp reviewed the inactive-ingredient data available for Youtheory Hair Collagen + Keratin. All 2 inactive ingredients — including capsule materials, fillers, and binders — are currently classified as safe in GoodSupp's ingredient reference data. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Youtheory receives a brand trust score of 89/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2010 and headquartered in Irvine, California, United States, the company offers 137 products in their lineup. Note: Youtheory has 2 historical regulatory incidents on record, which are factored into the trust score.

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