Post-colour-treatment that stabilises colour molecules and locks them into the hair structure for long-lasting pigment. Hair Care Benefits: conditions, smooths and seals the hair cuticle to lock in colour at the most critical moment, maintains brilliance of coloured hair, closes the colour process. Formulation Highlights: scientifically proven results show a significant improvement of colour longevity, for hair treated with permanent or semi-permanent colours and bleach. Neutralises all residues of alkali and peroxide.