The working principle of thulium laser is to shrink pores, improve fine lines and tighten skin by stimulating the production of collagen and inducing the contraction of collagen. Through micro-peeling skin reconstruction technology, it can effectively treat acne scars and surgical scars. During the penetration process, the hemoglobin in the blood vessels absorbs it more strongly, so it has the effect of coagulating blood and treating red blood filaments and acne (inflammation). After thulium laser treatment, it can stimulate the regeneration of the skin's dermis and epidermis, help rebuild the healthy state of the dermis and fight inflammation, thereby accelerating the absorption and metabolism of pigments and achieving the effect of skin whitening and lightening of spots.