Optical Brighteners do not irritate the skin

Years of animal and human studies have shown that even direct skin contact with CBS pure, a Optical Brightener , is non-irritating and does not cause skin irritation.Optical Brightener are not absorbed by the skin. Even though a small amount of Optical Brightener may adhere to the skin during use, it will not react with human skin and can be easily washed off completely through daily washing activities (such as hand washing and bathing) without percutaneous absorption. Therefore, direct skin contact with Optical Brightener - added laundry detergent will not cause harm.