What is “problem skin”? Why should “problem skin” be treated with medical skin care products under the guidance of a dermatologist? ”Problem skin” is defined as skin that is in a subhealthy state or in a state of dermatological disease. Common problem skin conditions include eczema, hormone dependent dermatitis, rosacea, acne, seborrheic dermatitis, chloasma, oily skin, dry skin, sensitive skin, etc. If these “problem skin” conditions are aggravated by the use of common cosmetic products, it is possible that the skin “problem” will be aggravated. “If you use hormone-containing drugs, they may be temporarily effective, but long-term use will lead to hormone-dependent dermatitis. Therefore, the best choice for “problem skin” is to use medical skincare products, and if necessary, to treat with drugs. At present, the Chinese Food and Drug Administration has not yet established a classification and management mechanism for “medical skin care products”, which are still classified as cosmetics, but many manufacturers are flying around with the concept of “medicinal cosmetics”, so it is difficult for the general public to determine which one is the real medical Therefore, medical skincare products should be used under the guidance of a dermatologist. At present, the domestic and foreign brands that have been unanimously recognized in the professional field of dermatology are Winona, Avène, Vyse, and Skin Care.