Kerastase Masque Therapiste is a reparative Bandage Treatment Fiber Renwal care for thick hair. The thick, creamy reparative masque deeply nourishes and works at very core of the hair, for very damaged, over-processed thick hair.Using Kerastase Masque Therapiste. the hair is deeply repaired. The hair fiber regains its strength and elasticity. Your hair is toned and revitalized.