Acne is a common clinical inflammatory skin disease with a high incidence, and after the inflammatory acne subsides, it will leave different degrees of post-acne inflammatory pigmentation, commonly known as “acne marks”, which are slow to fade and affect the aesthetics. This includes laser technology, photons, medical whitening agents, skin restorers, etc., which can be ideal for treating post-acne inflammatory hyperpigmentation. Skin Clarifying Laser QSNY Mode: The application of Q modulated Nd:YAG laser’s QSNY mode gives considerable treatment space for inflammatory hyperpigmentation. Melanocytes from the epidermis to the dermis can absorb laser energy, while the treatment process is low in laser energy and does not produce immediate melanin blast, so that the treatment will not provoke a melanin response, and after multiple treatments, it will completely remove This laser treatment is painless and non-invasive, and the recovery is fast. Laser carbon coating (black face doll): As a laser interdermal technology, its superiority lies in the fact that it is not a laser acting directly on the skin, with the help of nano-level carbon powder, uniformly heating melanin and all layers of skin, targeting the inflammation and discoloration formed in the early stage of acne, and accompanied by high sebum secretion and enlarged pores, the effect is better. Fractional laser: CO2 fractional laser, its treatment principle is to form MTZ on the skin surface, after the treatment, it will start the trauma repair mode, the epidermis will lightly peel off, the epidermis melanin will fall off, and the dermal collagen will be reconstructed to achieve rejuvenation and skin resurfacing. Transaminic acid: Competitive inhibition of tyrosinase activity, reducing melanin pigmentation and reducing inflammation, is a medical whitening agent to achieve whitening and spot reduction through anti-inflammation, and is more effective in the treatment of acne marks. EGF (Epidermal Growth Factor): EGF is an all-in-one skin repair agent that increases epidermal repair, lightens melanin, reduces inflammatory response, remodels collagen, and strengthens skin barrier function. Azelaic acid (azelaic acid): inhibits sebum secretion, fights acne inflammation, reduces hyperkeratosis and inhibits melanin production, a 4-in-1 treatment for acne and acne marks. Zinc oxide peptide dioxide and other sunscreens: Physical sunscreens provide the best sunscreen barrier protection for the skin, stopping UVA and UVB damage to the skin and acne, and preventing progressive aggravation of formed pigmentation.