Two Expert Systems in Hair Straightening The trend of straight hair continues to rise. In fact, there is a rumor that one in three women in the world aspires to have a sleek and bright style. Straight hair is extremely desired; It gives a feeling of vitality, is easy to comb and ensures the person a modern and sophisticated look. But for many women, straightening their hair is a daily challenge. A large percentage of the world's population has curly, wavy or naturally moving hair, in conflict with their desire for a smooth look. The range of Schwarzkopf Professional Strait Styling offers two major solutions to this problem ensuring a daily smoothing result. Strait Therapy and GlattSay goodbye to the plates! Two great solutions to always ensure perfect smoothing results.