In the earliest days, lotions were relatively simple, mainly for the purpose of cleansing and moisturizing. With the development of the cosmetic industry and the increase of people’s needs, different added ingredients began to appear, and the functions were inclined, and the names were even more fancy: astringent water, soft water, toner, rejuvenating water, functional water, essence water, serum, etc. These different names of the lotion, there are two main common role: one is hydration and moisturizing. Cosmetic water is generally used after washing the face, can improve the water content of the skin, and then after the external use of moisturizing cream, the water will be blocked in the skin, you can have a lasting moisturizing effect, than directly on the face with moisturizing cream effect is better. One is secondary cleansing. This means removing residual cleansers, makeup, etc., while adjusting the skin’s pH level. After washing with cleanser, there may be residual cleanser, makeup or sunscreen, etc. In addition, there are areas with high water hardness, long-term washing with hard water will be a burden to the skin, and make-up can play a deep-cleaning role. At the same time, because its pH value is precisely adjusted, it can be used on the surface of the skin to neutralize the acid-base imbalance caused by washing or improper use of skin care products, so that the skin can achieve the best state. The name of the lotion is different on the one hand, the brand is different, on the other hand, there is a focus on the effectiveness. When buying need to distinguish carefully, it is best to read the instructions and detailed understanding of the ingredients, do not be misled by a variety of shopping guide, choose the most suitable for their own one in order to maximize the effect. The actual fact is that you will be able to get a lot more than just a few of the most popular and most popular products. Such products are best dipped in a cotton pad and applied in one direction on the face, sometimes you can see the cotton pad sticky with dirt on it after washing your face. It is best not to use your hands to apply directly, because the hands themselves may not be clean enough, in addition, clean down the dirt remains on the hands or face, not to achieve the purpose of cleaning. 2, astringent water: added with shrinking pores, oil control ingredients, more suitable for oily skin use. It should be noted that this type of lotion may have alcohol content, sensitive skin and allergic people need to be careful. 3, skin softening water: more moisturizing and softening exfoliation is the main, the role of cleaning is not strong, you can use your hands to apply directly on the face. Some products add moisturizing ingredients thicker texture, between water and dew, used in the moisturizer before the effect is very good.