A dual-action hair repair treatment that targets split ends whilst offering heat protection, the Kérastase Resistance Therepiste Serum Duo is a sealing final step for damaged and over-processed hair that needs intense nourishment and a softer, silkier appearance.

Its combination of a reparative cream and a binding serum work to seal split ends, defend against further damage and protect from heat styling appliances up to 230°C. Infused with Fibra-Kap™ technology it contains 6 amino acids, a Wheat Protein extract and SP-94 to help recoup the loss of any keratin-associated proteins, nourish the scalp and soften the hair. Not only does the serum work to reinforce and repair the hair fibre by sealing split ends, but it also gives hair a renewed appearance that is silkier to the touch and looks far more polished. The heat protection agents make blow-drying twice as fast, ensuring hair is less prone to damage caused by thermal styling.

Apply to freshly washed and towel-dried hair by massaging into the lengths and ends. Designed to be a leave-in serum and used before blow-drying, it can also be massaged into the ends after blow-drying to further seal and repair the hair.