Sunsilk Perfect Straight Conditioner is co-created with Yuko Yamashita, a straight expert from Tokyo, Yuko has been a collaborator in producing breakthrough technology in hair care with Sunsilk and continues to give her inside scoop on how to achieve perfect straight hair, starting in the shower. Hair tends to frizz and lose its straightness as it dries—an exclusive formula bringing life to straight hair. With silk protein, it gently locks in the alignment of hair strands keeping them straighter & fully aligned as they dry. Hair So vibrant, silky, and full of movement. For best results use after shampooing with Sunsilk Perfect Straight Shampoo.Start Shopping Now!