Kérastase Masque Thérapiste is an intensively reconstructive care mask for brittle, severely damaged hair. It rebuilds the hair fibers from the inside out and repairs the hair in depth. The hair fibers are thus strengthened and regain their natural elasticity. The mask, with its very cosmetic texture, is also ideal for revitalizing strong hair. The first repairing 'Bandage' mask with a thick, creamy texture to repair severely damaged hair. Masque Thérapiste is an intensively reconstructive hair care mask for very damaged and over-stressed hair. It works deep inside the hair. The hair fiber is repaired and regains its strength and elasticity. The hair is strengthened and revitalized.