Kérastase hair mask 200ml resistance extentionisteKrastase Resistance Extensioniste Hair Mask is a nourishing treatment designed to strengthen and protect lengthening hair. This 200ml mask targets weakened strands, providing deep conditioning and resilience to reduce breakage and split ends. Infused with the brand's signature Resistance complex, it restores elasticity and smoothness while promoting healthier, longer lasting hair. Ideal for those seeking to extend their hair's lifespan and maintain