Open pimples, also called open blackheads, are mainly sebaceous accumulations formed inside the hair follicles, which form black corns by oxidation-like changes at the follicle openings, without pain or itching, and keratinization-like changes on the surface when touched by hand. For treatment, it is recommended to choose to use topical medication for application. It is recommended to apply hyaluronic acid gel every time after washing the face at night, which can increase the hydration of the skin to stretch the pores, and apply Adapalene gel in a thin layer in about 10 minutes. Adapalene gel can accelerate the rate of skin proliferation, so that the already expanded pores inside the metabolism of keratin plugs, so as to achieve the purpose of treating open acne, only to treat already formed acne, want to reduce the probability of recurrence can choose not to stay up late, eat less chili, eat less sweets, to ensure a happy mood, drink more water.