Flexible, buoyant curls and waves. For resistant, limp and grey/white hair. Gentle, true acid (6.7 pH) perm. Faster, gentler dryer-activated processing. Exothermic (self-heating) neutralizer is enriched with conditioners and a silicone protectant to restore hair's moisture balance and tighten and smooth the cuticle for lasting, natural-looking style support. No free ammonia. Reduced perm odor.