The proper use of skin care products can not only play a role in repairing the skin barrier and relieving inflammation, but also reduce symptoms such as dryness, burning and itching of the skin, reduce the dosage of drugs and prevent the recurrence of skin diseases, which can improve the quality of life of patients. With the advancement of cosmetic science research and related technology, the efficacy of cosmetics is both the driving force for the development of the cosmetics industry and the biggest demand for consumers to use cosmetics. In the early 1970s, Albert Kligman, a leading American dermatology professor, used the term cosmeceutcal to denote a product that had both the characteristics of a cosmetic and some efficacy, which is a superposition of the words cosmetic and pharmaceutical. Chinese scholars translate “cosmeceuticals” as “medicinal cosmetics”, “functional cosmetics” or “active cosmetics”. “Most dermatologists in China refer to these products for clinical use as “medical skin care products” or “medical skin care products”. Although there are some differences in understanding and translation, in the past 20 years, a large number of skin care products with cosmetic effects have been widely used in clinical practice, and a wealth of evidence-based medical information has been accumulated. This guideline is based on many clinical applications and emphasizes that skin care products for clinical use should have the following characteristics: 1. Higher safety: Although cosmetics have passed strict safety tests before marketing and meet relevant standards and requirements, skin care products for clinical application emphasize the streamlining of formulations and strict screening of raw materials, and emphasize the absence or minimization of substances that can easily damage the skin or cause In addition, the product packaging also requires attention to the prevention of pollution, as far as possible, the raw materials and finished products of skin care products, such as clinical safety assessment. 2, clear efficacy: according to the physiological characteristics of different types of skin and the pathogenesis of skin diseases for research and development, its product components have a clear mechanism of action, has been confirmed by various types of tests, on some skin diseases can play a supplementary therapeutic role. 3. Clinical validation: The clinical efficacy and safety of the products have been verified through human trials before marketing to ensure less irritation and lower incidence of allergic reactions. Based on the efficacy described on the product specification, we can broadly classify the skin care products for clinical use in dermatology into the following categories. 1.Cleaning 2.Moisturizing and skin barrier repair 3.Soothing 4.Oil control and anti-acne 5.Whitening and spot removal 6.Sunscreen 7.Promoting wound healing 8.Rejuvenation and anti-wrinkle 9.Concealer 10.Other Skin care products with added ingredients that inhibit sweat secretion and antibacterial can be used to improve hyperhidrosis and armpit odor, and with added ingredients that activate hair follicle metabolism, they can achieve the effect of promoting hair growth. Nowadays, with the rapid progress of cosmetic science and technology, more skin care products will be used in the future. Skin barrier-impairing skin diseases mainly include the following diseases: 1, dry skin diseases: such as atopic dermatitis, eczema, pruritus, etc.; 2, erythematous scaling diseases: such as psoriasis, hair erythroderma, erythroderma, etc.; 3, facial dermatitis: seborrheic dermatitis, rosacea (rosacea), perioral dermatitis, chronic exfoliative lipitis, etc.; 4, abnormal keratinization skin diseases: such as ichthyosis, perioral keratosis 5.Dry skin flaking caused by drugs: such as retinoic acid, benzoyl peroxide, etc.; 6.Physiological dry skin: mainly seen in the elderly or seasonal climate change caused by dry skin. The above diseases mostly choose skin care products of soothing class, cleansing class moisturizing and skin barrier repair class. Sensitive skin mainly includes the following diseases: 1, sensitive or intolerant subhealthy skin; 2, poor quality cosmetics or improper use of cosmetics resulting in skin barrier damage; 3, medical origin, such as laser and other minimally invasive surgery, various drug treatment caused by skin intolerance, such as hormone dependent dermatitis. The above diseases also mostly choose skin care products of soothing, cleansing, moisturizing or skin barrier repair. Seborrheic skin diseases mainly include the following diseases: acne, seborrheic dermatitis, rosacea and other skin diseases. The above diseases mostly choose oil control cleansing category, oil control and anti-acne skin care products, soothing category or skin barrier repair skin care products also have good auxiliary treatment effect. Pigmented skin diseases Pigmented skin diseases, such as chloasma, post-inflammatory hyperpigmentation, melanosis, etc., this type of disease auxiliary application of whitening and spot-removing skin care products, and with moisturizing and soothing skin care products for basic care, external application of sunscreen, etc. have obvious therapeutic effect. Hypopigmented dermatoses, such as vitiligo, can be treated with concealer skin care products to cover up the lesions while medication is used to treat the disease. Photodermatoses include photosensitive dermatitis, polymorphic heliotrope, chronic actinic dermatitis, lupus erythematosus, dermatomyositis, skin photoaging, etc. The principle of skin care product selection is to emphasize sun protection, while applying moisturizers to improve the symptoms of dry, flaky skin. Clinically, skin rejuvenation products are used to delay photoaging of the skin. Skin care after laser and other minimally invasive procedures Skin care products for this type of condition: soothing, cleansing, soothing wet mask, moisturizing or skin barrier protection products are used for basic care. Skin care products that promote wound healing can accelerate skin repair functions, and sunscreen skin care products should also be used after the acute phase. Other For armpit odor and hyperhidrosis, anti-odor and antiperspirant skin care products can be used, and for certain types of hair loss patients, hair care products can be used. And now there are many brands of medical skin care products. You can choose the effective ingredients according to your needs, do not buy the wrong, or be fooled by advertising Oh. The actual fact is that you will be able to get a lot more than just a few of the most popular and popular products. In daily life to develop good skin care habits, pay attention to hydration, moisturizing, sun protection.