Other uses include bleaching flour, hair bleaching, teeth whitening, and textile bleaching. Hydrogen peroxide is also used for tooth whitening. Teeth enamel can have an adverse negative effect by whitening treatment. Higher concentrations are used for hair bleach and teeth whitening. Bleaching is a process for whitening fabrics which has been practiced for thousands of years. She also fronted an international advertising campaign for the consumer tooth whitening product Dental White. It may be found in most whitening toothpastes. Urine was also used for whitening teeth in Ancient Rome. As a drug, this compound is used in some preparations for the whitening of teeth. The tooth whitening endpoint like that of the whitening strips. That extends to the use of perborates for tooth whitening. The use of skin whitening products is especially popular amongst Asian women. Blocking this transfer is a mechanism of action of some skin whitening agents. The history of skin whitening in East Asia dates far back to ancient times. Blunt trauma causes swelling, thickening, and whitening of the lens fibers.