is a permanent alkaline to gentle action on the hair which acts in a manner ultrabilanciata exclusively where the sulfur bridges are present, the effect of which occurs the phase curling.
on püsiv leeliselist õrnatoimelinejuuksed, mis toimib viisil ultrabilanciata üksnes juhul, kui väävel sillad on olemas, mille toime tekibjärk curling.