Kérastase hair styling products. NUTRITIVE Masqueintense Cheveux Épais Irisome. Exceptionally concentrated nourishing hair mask for thick, dry and very damaged hair. Regenerates and nourishes from deep within thanks to its formula: Carbohydrates that give energy to the hair from the root, Proteins that maintain the nutritional status of long hair, Lipids that protect the hair fiber so it doesn´t dry out and Iris Rhizome Extract that plays an antioxidant and protective role. Your hair will look very soft, disciplined, without caking and with an exceptional brightness.