Kerastase Chronologiste Intense Regenerant Hair Mask: An intensely nourishing and revitalizing hair mask. Formulated with hyaluronic acid to moisturize and hydrate both scalp and hair fiber. Blended with Abyssine to invigorate and revitalize hair fiber for a flawless finish. Infused with vitamin E for anti-oxidant properties to protect from external aggressors. Deeply nourishes the hair and scalp Color safe.