| abstract |
The invention relates to the use of a polyurethaneurea, obtainable by reaction at least a) a polyisocyanate component, b) a polymeric polyol component, c) a hydrophilizing component and d) an amino-functional chain extender component, wherein the polyisocyanate component a) ≥ 75 mol% isophorone diisocyanate (IPDI) and the amino-functional chain extender component c) ≥ 75 mol% isophorone diamine (IPDA) comprises, on hair to improve the water resistance of the hairstyle obtained by shaping the hair. |