Schwarzkopf Osis Softn' Straight, an essential tool for leaving your hair straight and beautiful all day long. This medium control emulsion works significantly to prevent split ends and hair breakage. With Schwarzkopf Osis Softn' Straight? You can expect sleek hair all day long. Straight hair for a longer, smoother, more touchable finish, and heat damage protection is guaranteed when you apply Schwarzkopf Osis Softn' Straight, thanks to a combination of oil and moisturising panthenol.