When you wash your hair, the shampoo opens the struttura surface of the hair – the cuticle. For this reason it is important to add una After washing, care for your hair to close the cuticle. This is exactly what Shea Moisture Jamaican Black Castor conditioner will do. Oil Strengthen & Restore. In addition to sealing hair fibers, it provides nourishment, hydration, and softening—essential for beautiful, shiny, and healthy hair. It protects hair from mechanical damage and dryness, and smoothes its surface, helping to soften it and making it easier to comb and perform subsequent treatments.