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Vitamins & Supplements

Biotin, Hair & Nails

Biotin is the headline ingredient in most "hair, skin and nails" supplements, and it is worth being straight about it: biotin genuinely helps only if you are deficient, which is rare. For most people the dramatic hair-growth claims outrun the evidence. That said, these are popular, generally safe, and often bundle other useful nutrients, so we rank the best-rated while keeping the marketing in check.

Common questions

Will biotin make my hair grow?

Only really if you are deficient in it, which most people are not. Genuine biotin deficiency can cause hair issues, and topping up fixes that; taking extra when your levels are fine is unlikely to do much. Honest but true.

Are these supplements a waste of money then?

Not necessarily. Many combine biotin with things like zinc, selenium and vitamins that do play a role in hair and skin. Just buy with realistic expectations rather than expecting a transformation.