The Kérastase Premire Masque Filler Reparateur is an intensive conditioning treatment designed to restore hair strength and volume from the inside out. This mask penetrates deeply to repair damage and rebuild compromised hair fibers, leaving the hair feeling supple, full, and repaired after every use. Ideal for hair that has undergone chemical processes or is subject to external stressors, this product offers a restorative experience that revitalizes the hair structure, improving elasticity and overall health.