It is a hair mask, or semi-permanent dye, which is applied directly to the hair, without mixing with oxidant or activator. It does not lighten the hair on which it is applied. The duration, depending on the hair, is of between 6 and 8 washes, although it can diminish if baths or solar exposures are made.It cares for and repairs hair during application,?as it contains stem cell extract, hyaluronic acid, Cysteine Bond Complex and positively charged anti-frizz conditioning actives.Mode of Use:Apply Bright Touch and blow dry hair at not too high temperature or in the air.