Salerm 21: Silk Protein Leave-In Conditioner – Hydrates, repairs, protects, adds shine, and detangles for revitalized, strong, and luminous hair. Transform Your Hair with Salerm. This revolutionary leave-in conditioner offers a unique 2+1 effect, providing intense care for hair that's damaged, processed, dry, or stressed. Formulated with powerful silk proteins and Provitamin B5, Salerm 21 penetrates deep into the hair fiber, delivering instant revitalization, incredible shine, and deep hydration from the very first use.