Usually, the general said scrub is that the original smooth surface objects become not smooth, a process make light diffuse reflection at the surface of the formed shape. For example, frosted glass, make it become opaque; frosted leather, make leather compared with the general surface not so bright. Frosted in chemistry is to use glass silica sand, emery, pomegranate powder abrasive grinding or manual grinding machinery on its surface is made of rough, uniform, can also carry out the processing of glass and other objects surface with hydrofluoric acid solution, the products become frosted glass. Beauty is in the scrub exfoliates with frosted manner, although the effect is good, but not commonly used, should according to their own skin and.