The Booster for damaged hair Fusio Dose by Kérastase (Booster Reconstruction) of 120 ml is an intensive treatment designed for damaged and fragile hair. Thanks to its formula rich in regenerating actives, it strengthens the hair fiber from within, improving elasticity and resistance. Ideal for restoring softness and vitality, this customizable concentrate integrates perfectly into the beauty routine, offering professional results at home. A true ally for those who want stronger, healthier, and shinier hair in just a few applications.