This curly hair shampoo strengthens and moisturizes curly and coily hair, when paired with the Curl Define Conditioner it will restore strength from within. For defined, moisturized curls in one use.Created with our exclusive PROTEINFUSION blend with silk protein and marula oil, this shampoo with protein delivers stronger, more defined curls.Nexxus Curl Define shampoo for curly hair is sulfate freeOur salon quality shampoo sulfate free will preserve and protect curly and coily hair's natural proteinsFor best results, use both our Curl Define shampoo and conditioner for curly hair and coily hair.This curl enhancer shampoo for curly & coily hair is part of the Nexxus Curl Define range with hair products for curly hair including a pre-wash treatment, conditioner and leave-in conditioner.