KÉRASTASE EXTENTIONISTE line is a strengthening hair care range designed to support healthy hair growth and improve length retention. The KÉRASTASE EXTENTIONISTE line is enriched with Creatine R™ and Taurine to reinforce the hair fiber from roots to ends, reduce breakage and protect against split ends. Ideal for weakened or slow-growing hair, it helps achieve stronger, longer-looking lengths with improved resilience and shine.
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