Not forever. Because it is aimed at grinding the skin surface, this technology is not permanent and the duration varies from person to person. Generally, it needs to be maintained and supplemented many times to keep the skin in an ideal state. Micro-crystal grinding in Shizuishan, Ningxia is a beauty technology. The cuticle on the skin surface is ground by machine, and special skin care products are applied to achieve the effect of whitening, removing spots and rejuvenating skin.