Nutritive Masquintense Riche Deep Nutrition Rich Mask by Kérastase is a deeply nutritive ultra-concentrated rich hair mask for very dry medium to thick hair. The best hair mask for thicker hair, it contains anti-dryness polymers to maintain hair's lightness and movement, and essential nutrients that boost the formula's ability to nourish and reinforce the hair. The rich cream feeds hair with nutrients and moisture for instant suppleness, radiant shine, and a satin touch. Masquintense Riche has a rich and thick white creamy texture, making it an ideal very dry hair treatment. Up to +89% of immediate hydration & 72H nutrition. (1)Instrumental test results after application of Masquintense Riche.