Expert opinion
This guide corresponds to the Leave-In Molecular Repair Hair Mask. The K18 Leave-In Molecular Repair Hair Mask is a hair mask designed to offer intensive repair. It acts in just 4 minutes, seeking to restore hair's strength and elasticity. It is an option to consider for those looking to improve the softness, smoothness, and shine of their hair, especially if it has been exposed to chemical treatments, bleaching, or heat tools.