The K18 Leave-In Molecular Repair Hair Mask has quickly become the crown jewel of the brand’s science-backed, stylist-approved lineup. In recent years, K18 has cornered the market on easy-to-use, ...

But none of them come close to the clean, brightening look I get from K18's new AirWash dry shampoo. My mid-life hair is ...

Reviews and recommendations are unbiased and products are independently selected. Postmedia may earn an affiliate commission from purchases made through links on this page. It’s said to repair ...

K18’s patented biomimetic peptide technology was developed over a decade of biotech research. Rather than coating hair temporarily, as many traditional products do, K18 claims to repair keratin ...