Designer Touch Sensitive Scalp No Lye Relaxer A calcium hydroxide-based formulation that gently relaxes without irritation. This formula is perfect for clients with sensitive scalps, all hair types and textures, including color treated hair. Designer Touch Sensitive Scalp No Lye Relaxer relaxes without the irritation that sometimes occurs with other relaxer products. Each kit contains Post Perm Treatment for a deep-penetrating after relaxer conditioning treatment. Available in one strength for all hair types.