At present, there are many kinds of soaps on the market, each with different characteristics, functions and usage methods. As far as its components are concerned, it can be divided into hard soap, soft soap and fat soap. Hard soap is laundry soap, which contains more alkali (above 0.25%), has strong detergency, can reduce skin acidity, soften and dissolve cuticle, is irritating to skin, and is not suitable for bathing and washing face. Soft soap, also known as neutral soap (alkali content is less than 0.25%), such as various soaps, medicated soaps, nutritional soaps, etc., are all soft soaps; Grease soap, without alkali, will not cause irritation to all kinds of skin, suitable for children's skin, dry skin and sensitive skin. As far as its use is concerned, there are mainly the following types: laundry soap, which has high alkalinity but strong detergency, can replace washing powder and is not suitable for bathing. At present, there are "Fan" brand, "Lighthouse" brand, "Carving" brand and "Vitality" brand in the market. Has the functions of sterilization, disinfection and treatment of certain dermatoses. The medicated soap can wash away dirt and bacteria attached to the skin, prevent and treat various skin diseases, eliminate body odor and sweat odor caused by sweat decomposition, and prevent and treat acne. However, medicinal soap should not be abused, and improper use will irritate the skin or cause allergic reactions. The main brands in the market are "Shufujia", "Dilu", "Conway" and "Shanghai" health soap. "Zanthoxylum nitidum" tea tree oil soap, beauty soap, also known as nutritional soap, contains high-quality emollients, honey, phospholipids, vitamins, amino acids, collagen, melon juice and other substances that nourish the skin. They can promote the metabolism of skin cells, achieve the purpose of delaying skin aging, and play a similar role in cosmetics. The main brands are "Kelinli" transparent beauty soap and "Olay". Nivea Moisturizing Soap, Softer Papaya Whitening Soap, Piaoying Pure Aloe Soap and Shanghai Aloe Soap, Pigeon Protein Whitening Soap, LG Le Bang Soap, Aoqili Pearl Milk Soap, Belle Milk Moisturizing Soap and Yumeijing, Yourou and other milk soaps. Give women more choices and care. For example, the following varieties: "soft" Yue's soap: suitable for vulva cleaning before and after menstruation, before and after pregnancy, before and after delivery, and underwear cleaning during the above period. There are also "Mela" brand female care soap and "Yiren" brand yin cleaning soap with similar functions. "Softer" light hair soap: contains a variety of light hair factors that decompose melanin in body hair, on the one hand. On the other hand, it can penetrate into the hair follicle and act on the hair follicle wall, thus controlling the growth of body hair and playing the role of diluting and softening body hair. Aoqili seaweed slimming soap is extracted from seaweed and other natural plants, and has diuretic, laxative, stagnation-resolving, blood stasis-removing, sterilization and anti-inflammatory effects. In addition, there is a similar "Softer" belly slimming soap, which contains evening primrose seed oil and natural plant essence. In addition to lowering blood fat, it can also reduce abdominal weight. "Softer" PM fruit Fengyun soap: It can activate Fengyun cells in the whole body, make the hormone secretion of Fengyun cells tend to be active, and act on the breast through the circulation of body fluids. Ordinary soap is made by saponification of lye. Generally, it contains 1% to 1.5% essence, and there are many fragrance types in soap, such as sandalwood and rose. Fruits, such as "JiPepsi" fruit beauty soap and "Roland" fruit soap. There are also soaps made of perfume, such as "Aishi" soap and "Piaoying" French soap. Cleaning and moisturizing soap is different from ordinary soap. Various moisturizing ingredients are added according to the different needs of human skin, which is more suitable for people's needs. For example, the following varieties: "Kao" milky white soap. Suitable for all skin types. LUX Lux Soap: It is divided into different types, and some components contain lactic acid and moisturizing protein, which can effectively prevent the loss of natural moisture in the skin, maintain abundant elasticity, and make the washed skin moist and smooth, suitable for different skin types; Refreshing soap contains lemon moisturizing essence, which is suitable for normal or oily skin. FA refreshing soap: contains "water balance system" and natural vegetable oil, thoroughly cleans and moisturizes the skin, leaving it relaxed and free, suitable for all skin types. Children's soap is generally neutral or weakly acidic and has no irritation to children's delicate skin. In addition, the free alkali content of baby soap is low. It is also suitable for cleaning skin. For example, the following varieties: Shufujia children's soap: Dibaofu, an antibacterial ingredient, can effectively remove bacteria and inhibit their regeneration, and contains natural moisturizing ingredients to moisturize the skin. Johnson baby soap: contains oat ingredients and natural vegetable oil, and its quality is pure and mild. Similarly, there are "baby noodle king" baby milk moisturizing soap and so on. Liquid soap is usually packed in bottles. Even sensitive skin. The common hand sanitizer on the market is "Kemibeifen" from Xi An Kai Rice. Its ingredients contain natural ingredients such as aloe vera and seabuckthorn oil, and do not contain phosphorus, aluminum, alkali and other ingredients. It can strongly sterilize, gently decontaminate, prevent cross infection, moisten hands and prevent chapped skin. Similar products include "Blue Moon" and "Skin Care" hand sanitizers.