The protein treatment is required for hair that is already damaged when a client comes to a stylist for a consultation. The treatment is customized to restore lost nutrients to the hair depending on the extent of the damage. When the hair is heavily damaged due to continuous color treatments such as bleaching, the protein treatment must be applied prior to thermal reconditioning with Liscio. What seems like water being sprayed by the stylist is actually hair components such as keratin and CMC that the hair has lost.