Facial cleanser, sunscreen, protection cream and other beauty products 20 years ago for many people in the country may be relatively unfamiliar, with the development of society, these products have become indispensable to modern life, daily necessities, these daily necessities can be attributed to the category of cosmetics. Role of cosmetics Cleansing role Removes dirt from the skin, hair, mouth and teeth, as well as unclean substances produced by the body’s secretion and metabolism. For example, cleansing creams, cleansing milk, cleansing masks, cleansing lotions, foaming baths, shampoos, and toothpastes. Protective effect Protect the skin and hair, etc., so that it is moist, soft, smooth, elastic, in order to resist the cold wind, the sun, ultraviolet radiation and other damages, to increase the vitality of secretion function, to prevent the skin from wrinkling and cracking, hair withered and broken. Such as snow cream, cold cream, Jian skin cream, anti-cracking ointment, milk, sunscreen, moisturizing oil, hair milk, hair conditioner and so on. Nutritional effects Supplementary skin and hair nutrition, increase tissue vitality, maintain the water content of the skin stratum corneum, reduce skin wrinkles, slow down the aging of the skin and promote the physiological function of the hair, prevent hair loss. Such as ginseng cream, vitamin cream, pearl cream and other nutritional creams, nutritional masks, hair growth water, medicated hair milk, medicated head wax. Beautification Beautify the skin and hair to increase the charm or aroma. Such as foundation cream, powder, powder, rouge, lipstick, hairspray, hair dye, perm, eye shadow, eyebrow pencil, mascara, perfume and so on. Preventive and curative effects Preventing or treating physiopathological phenomena affecting the appearance or function of the skin and hair, mouth and teeth. Such as freckle cream, acne cream, sweat suppressant, deodorant, hair growth, prickly heat, medicated toothpaste and so on. Pharmaceutical cosmetics in addition to the necessary normal ingredients, often according to the special use and purpose and add a variety of drugs, such as vitamins, amino acids, antihistamines, ultraviolet absorbers, astringents, sweating preventive agents, stimulants, etc., so that both the role of cosmetics, but also certain preventive and therapeutic effects. This has the concept of pharmaceutical products. Foreign pharmaceutical market is booming, the domestic “drug” has not been clearly defined. Although called medicine, but this cosmetic is not medicine, its role is mainly to moisturize the skin, skin protection. For some skin diseases can also play a role in assisting in the treatment of some. In recent years, the domestic cosmetics have been sold in this area. There are also used in traditional Chinese medicine formulated, such as angelica beauty cream. According to research, angelica has inhibit tyrosinase activity, prevent tyrosine oxidation to form the role of pigment, plus angelica contains proteins, amino acids and other nutrients, there are to make the human skin from fine, promote skin health, slow down the aging of the skin and other efficacy, to achieve the treatment of chloasma, freckles and other beauty purposes. There are also dahuric dahurica, white and other preparations, used to moisturize the skin, to prevent the skin rent brown, cracked. However, due to some chemical drugs are easily sensitized drugs, such as white mercury, the incidence of allergic reactions to cosmetics is slightly higher than the general cosmetics. Since medicated makeup has pharmaceutical ingredients, it also has certain side effects. For example, there are many kinds of skin bacteria on anyone’s skin, under normal circumstances, these bacteria not only do not have any adverse effects on the skin, but also can make the skin to form a normal physiological cycle, and play a role in preventing other bacteria and mold reproduction and invasion. If you use medicinal cosmetics with antibacterial effect for a long time! On the one hand, it will make the disease-causing bacteria resistant, on the other hand, while killing the disease-causing bacteria, it will also kill the above mentioned bacteria on the skin, which will bring difficulties in the treatment of the disease, and new infections may also appear. For this reason, it is best to use medicated cosmetics under the supervision of a doctor.