J-258, also known as black face doll laser beauty instrument, is a whitening instrument strongly recommended by Big S. The black face doll laser beauty instrument adopts the "Q-switching" mode of gemstones ("Q-switching" of the domestic dye box), which uses laser to instantly emit high energy to effectively crush and remove the pigment in the diseased tissue. That is, the principle of light blasting: the high energy gathered by the laser is emitted instantaneously, so that the laser with a fixed wavelength penetrates the epidermis instantly in a very short time (only 6ns gem movement)When it reaches the diseased tissue, it quickly crushes the corresponding color base, and the corresponding pigment group expands and bursts instantly when it is heated. A part of the pigment group (superficial epidermis) immediately pops out of the body, and a part of the pigment group (in the basal tissue) breaks into pieces that can be absorbed by macrophages in the human body. The fine particles phagocytized by cells are digested by macrophages and finally excreted through the lymphatic system in the human body. The pigment of the diseased tissue will gradually fade until it disappears, while the surrounding normal skin tissue will not form any pigment because it does not absorb laser light of a fixed wavelength. damage.