Biotin
Biotin, also known as vitamin B7, is a popular beauty ingredient added to hair, skin and nail formulas. It is widely used in UK shampoos, conditioners, serums and supplements marketed for stronger, healthier-looking hair and nails. Shoppers often choose biotin-enriched products when seeking support for brittle nails or lacklustre hair.
How it works in skincare
In cosmetics and skincare, biotin functions as a conditioning agent and co-enzyme that helps support the metabolism of fats, carbohydrates and proteins within skin and hair cells. When added to topical formulas it contributes to smoother hair cuticles and improved surface feel, leaving hair looking shinier and nails appearing less brittle. Its water-soluble nature makes it easy to formulate into lightweight serums, creams and rinse-off haircare products without heaviness.
Key benefits
- Helps hair look thicker and healthier
- Contributes to smoother, shinier hair texture
- Supports the appearance of stronger nails
- Helps reduce the look of brittle or splitting nails
- Improves overall hair manageability and softness
- Enhances the conditioned feel of skin and scalp
Best for
dry hair, damaged hair, brittle nails, dull hair, fine hair
Where it comes from
Biotin is naturally found in many plant sources including nuts, seeds and leafy greens, and is also produced by fermentation using microorganisms for cosmetic-grade purity.