Biotin

Also known as vitamin B7, vitamin H

What is biotin?

Biotin is vitamin B7, a nutrient your body uses to build keratin, the protein in hair and nails. It shows up in hair supplements, shampoos, and scalp serums. It helps most when your biotin levels are low, and results take at least three months.
Best forThinning hair Hair growth Brittle nails Hair strength

Products with biotin

Shop all 53
Viviscal Pro hair growth supplement 180 Count box on a white background Viviscal Professional Viviscal PRO Hair Growth Supplement - 180 Tablets $128.00 Viviscal Pro Hair Growth Supplement 60 Tablets shop at Exclusive Beauty Club Viviscal Professional Viviscal PRO Hair Growth Supplement - 60 Tablets $48.00 Nutrafol Women's Balance Hair Growth Nutraceutical shop at Exclusive Beauty Nutrafol Nutrafol Women's Balance Hair Growth Nutraceutical $79.00 Nutrafol Women hair growth dietary supplement bottle with 120 capsules Nutrafol Nutrafol Women Advanced Hair Growth Nutraceutical $79.00

Pairs well with

  • Keratin
  • Collagen
  • Caffeine
  • Rosemary

Use with caution

  • Blood tests (tell your doctor you take it)
  • High doses without a doctor's advice

Biotin FAQs

Biotin helps hair grow when your levels are low. If your levels are normal, the proof is thin, so look for formulas that pair it with other nutrients.

Give it three to six months. Hair grows about half an inch a month, so new growth takes time to show.

Biotin can throw off thyroid and heart test results. Tell your doctor you take it, and ask if you should stop a few days before a test.

Biotin shampoo coats and thickens the feel of each strand. It doesn't reach the root the way a supplement does.

Related reading

3 ways to treat thinning hair Should you take supplements for your skin? Rosemary: benefits for hair and skin

This content on this page is for general information only and is not medical advice. Always speak to a dermatologist before starting a new skincare routine.