Kérastase Resistance ThÉrapiste is a repairing regime for very damaged and over processed hair that is dry and brittle with visible split ends. Enriched with FIBRA-KAP, a powerful complex designed to compensate for missing KAPS (Keratin Associated Proteins). KAPS account for up to 50-60% of the hairs structure and start to deplete when hair becomes damaged. Also formulated with Ressurection Sap, an extract from the Myrothamnus Flabellifolia plant, known for its ability to resurrect itself, helps preserve the structure of the hair fibre. Kérastase Serum ThÉrapiste is a double serum that\'s texture combines a repairing cream and a binding serum to instantly reinforce and resurface the hair fibre. This repairing dual-serum protects hair against heat up to 230°C and halves blow-drying time. Hair is repaired at its core, the hair fibre regains strength and elasticity and split ends are sealed. Suitable for use both on fine and thick hair. Directions for use: Apply to clean towel-dried hair. Massage onto the lengths and ends of hair. Blow dry and style as usual. Can also be applied to the ends of dry hair. For best results, use as part of the ThÉrapiste routine.