Collagen supports hair structure and scalp health, while keratin repairs hair strands and enhances hair smoothness and shine. Biotin enhances keratin production for stronger, thicker hair.

Keratin is one of the most popular hair treatments in India. It is a natural protein found in our hair, skin, and nails that ...

Two of InStyle's curly-haired editors gave keratin treatments a try and reported back with their results. Sam Reed, who has type 3A curls, tried a treatment without formaldehyde. Meanwhile ...

Long, strong, frizz-free locks are coming your way. The Standard's journalism is supported by our readers. When you purchase through links on our site, we may earn an affiliate commission.