Core Viewpoint - The article provides a skincare guide for hot and humid weather, emphasizing the importance of adjusting skincare routines and product choices to alleviate skin issues caused by high temperatures and humidity [1]. Skincare Recommendations - Choosing the right sunscreen is crucial, with recommendations for SPF30+ and PA++ for daily use, and SPF50+ and PA++++ for prolonged sun exposure activities [5]. - Daily skin cleansing is essential due to increased oil secretion in hot weather, with advice to wash the face twice daily and use appropriate cleansing products based on skin type [7]. - It is advised to avoid thick application of skincare products in summer to prevent pore blockage and acne [9]. Mask Usage Guidelines - For regular skin, masks should be used 2 to 3 times a week, while sensitive or problematic skin should limit usage to 1 to 2 times a week, with consultation from a dermatologist if necessary [10]. - Masks should be applied for 15 to 20 minutes, with special materials allowed to extend up to 30 minutes, and sensitive skin should limit application to 10 to 15 minutes [10]. Common Skincare Misconceptions - Overuse of oil-absorbing sheets can stimulate more oil production; it is recommended to limit use to no more than three times a day and to hydrate afterward [12]. - Washing the face with ice-cold water can cause capillary expansion, leading to redness; using lukewarm water is advised [12]. - Skincare products should be chosen based on skin type, and sensitive skin should avoid high concentrations of acids or alcohol [13].