Kerastase Sérum Thérapiste Hair Serum is a double-action hair serum for very-damaged and over-processed hair. Its innovative formula associates a repairing cream and a binding serum for a thermo-protection reaching up to 230°C. Repairing the hair fiber instantly, it reinforces and smoothes the surface of the hair fiber.
 
The serum contains key ingredients such as Gluco Peptide, which enters the deepest layers of the cuticle to strengthen existing hair and stimulate growth, Wheat Protein Derivative, which repairs the flexibility and elasticity of damaged hair, restoring uniformity and smoothness, and Native Plant Cells, which ensure deep hydration, reducing the risk of weakened roots and leaving soft hair.