For seriously damaged hair, the rich Kérastase Resistance Therepiste Serum 30ml Duo nourishes overly processed strands & restores their luminosity & resilience. Designed as a repairing cream & serum dual treatment, it is ideal for split ends & limp, brittle fibres, keeping them hydrated & healthy. Taming even the thickest & unruliest of locks, this FIBRA-KAP enriched formula serves as heat protection, making the hair resistant to heat up to 230 degrees. in addition, it also makes the strands less prone to breakage & drying. Packed with nutrients, it locks the moisture in & makes the hair soft & silky. With extra amino acids, this luxurious treatment makes your locks shinier & more voluminous. Applied to washed hair, either damp or dry, it penetrates the cuticle & restores the gloss from the inside out. The serum improves fibres' structure, making it more elastic & flexible. This rich treatment also helps reduce blow-drying time, as well as make styling much easier. Only apply this product to mid-lengths & ends.