Details.
Permanently transforms curly, wavy, frizzy, and unruly hair into soft, silky-straight hair that is easier to manage. The treatment includes a strand test before straightening, application of an ammonium thioglycolate-based solution, rinsing and drying, flat ironing, and neutralizer application. Hair should not get wet for 48 hours afterward, including exposure to sweat, steam, or heavy fog, and activities that crease the hair should be avoided.