Guide

Supplements for hair, nails and skin

Prepared by the LekCheck team · Last reviewed: 2026-06-29 · How we create our content

The condition of hair, nails and skin depends mostly on a full diet and general health. Some vitamins and minerals are associated with supporting them and are often sought as supplements. Below are the most used ingredients; choose one to compare products and prices. Sudden hair loss or changes in the nails require medical assessment.

This guide was prepared by the LekCheck team and has not been reviewed by a doctor or pharmacist. This article is for general information only and is not medical advice, diagnosis, or treatment. Do not start, stop, or change any treatment without consulting a doctor or pharmacist.

Biotin

Biotin (vitamin B7/H) is often associated with support of the hair and nails. For each supplement there are recommended daily amounts. High doses of biotin can affect some laboratory tests — tell your doctor if you are taking a supplement.

Collagen, zinc and selenium

Collagen, zinc and selenium are among the commonly sought ingredients for the skin, hair and nails. Follow the recommended amounts and do not exceed the upper intake limits without proper judgement.

When to see a doctor

See a doctor for sudden or heavy hair loss, patchy baldness, brittle or deformed nails, skin rashes, or if the changes come with other symptoms — they may be a sign of a deficiency or a disease that needs treatment.