There is a magic moment between wet and dry hair when your hair looks perfectly straight and beautifully aligned. But as it dries, it starts to puff up and lose shape. Sunsilk expert yuko yamashita has cocreated Sunsilk perfect straight, its straight lock technology actively control and hold strands perfectly aligned as it dries. It penetrates deep within the hair fibre, reducing frizz and straightening strands, keeping them fully aligned as they dry. Experience straight hair that is shiny, smooth and gorgeous, right from the shower. Based on lab test on Sunsilk perfect straight system vs non conditioning shampoo.