Collagen supports hair structure and scalp health, while keratin repairs hair strands and enhances hair smoothness and shine.

Nowadays, if such a makeover were to be replicated, we’d put good money on the hair stylists involved using a keratin treatment. Why? Keratin is renowned for its ability to reduce frizz and tame ...

It can extend to the forearms and lower legs. This benign skin condition results from a buildup of keratin, a hair protein, in the pores. If you have keratosis pilaris, the keratin of your body ...