Kérastase Bain Thérapiste, Soin Premier Thérapiste, Masque Thérapiste & Serum Thérapiste Pack restores strength and health back to very damaged, over-processed hair. Kérastase Bain Thérapiste, Soin Premier Thérapiste & Masque Thérapiste Pack includes: Kérastase Bain Thérapiste 250ml Kérastase Soin Premier Thérapiste 200ml Kérastase Masque Thérapiste 200ml Kérastase Serum Thérapiste 30ml Erosion Levels 3-4. Key Ingredients: FIBRA-KAP™ (Keratin Associated Proteins) - KAP make up 50-60% of hair's structure. When hair is damaged, these proteins are lost. Fibra-KAP is a powerful complex to restore missing proteins and restore strength to hair fibre Sève de Résurrection - The resurrection plant that can survive extreme conditions (of dryness and dehydration) and has the capability to resurrect itself after 10 years of near death Hair looks healthy and feels nourished.