保湿 refers to the process of retaining moisture in the skin to prevent dryness and maintain a healthy appearance. It involves using products that help to hydrate the skin, such as creams, lotions, and serums. Proper 保湿 is essential for all skin types, as it can improve skin texture and elasticity. In addition to topical products, 保湿 can also be supported by drinking plenty of water and maintaining a balanced diet. Environmental factors, such as climate and humidity, can affect the skin's moisture levels, making 保湿 an important part of daily skincare routines, especially in harsh weather conditions.