Supplements for hair, skin and nails
Biotin, zinc picolinate, the hair skin and nails formula, collagen peptides, vitamin C and biosilica, with the authorised claims and one honest line about iron.
How to choose a hair, skin and nails supplement
Hair, skin and nail supplements have a few authorised claims and a lot of marketing. This page sticks to the claims, and adds one line most pages leave out: hair loss with tiredness or heavy periods is often iron, so test first.
Why these
Biotin: Biotin contributes to the maintenance of normal hair and skin.
Zinc Picolinate Capsules: Zinc picolinate; zinc contributes to the maintenance of normal hair, skin and nails.
Hair, Skin and Nails Formula: The formula, with biotin and zinc.
Classic Collagen: Collagen peptides; the skin trials ran about 90 days.
Vitamin C Ascorbic Acid Powder: Vitamin C contributes to normal collagen formation for the normal function of skin.
Biosilica: Silicon as orthosilicic acid.
What to skip
Gummies with fractions of the doses used in trials, and anything claiming to regrow hair.
Read the evidence
How long does collagen take to work? · What your ferritin level means
If you take prescribed medicines, are pregnant or breastfeeding, or have a diagnosed condition, talk to your GP or pharmacist first. Not sure which fits? Ask Nutri365, the Nutri Tailor AI health expert, which checks for interactions and contraindications.
Written by Nutri Tailor from the Health Reference Library. Last checked 6 September 2026. General information, not personal advice.
Common questions
Does biotin help hair growth?
Biotin contributes to the maintenance of normal hair, which is the authorised claim. There is no authorised claim for growing hair, and the trials behind that idea are in people who were deficient.
Why does this page mention iron?
Because hair loss with tiredness or heavy periods is often low iron, and a ferritin test settles it before any hair supplement.
How long does collagen take for skin?
About 90 days in the trials that measured skin outcomes.
Written by Nutri Tailor from the Health Reference Library. Last checked 6 September 2026. General information, not personal advice.