Core Viewpoint - The article addresses concerns regarding the effectiveness and safety of sunscreen masks, clarifying misconceptions about their impact on skin pigmentation and temperature regulation. Group 1: Mechanism of Sunscreen Masks - Quality sunscreen masks block UV rays through two methods: increasing fabric density or thickness to reduce UV penetration, and using fibers that absorb or reflect UV rays [2] - High-quality fabrics often undergo special weaving or treatment processes to enhance UV protection, requiring specific dyes to achieve a high UV protection factor (UPF) [2][3] - According to national standards, products with UPF greater than 40 and UVA transmission rates below 5% are classified as "UV protective products" [2] Group 2: Temperature and Skin Pigmentation - Wearing sunscreen masks can raise local skin temperature, but this increase is negligible compared to the temperature rise caused by direct sun exposure [3][4] - There is no evidence that a temperature of 42 degrees Celsius directly activates melanocytes; factors like UV exposure and hormonal levels primarily influence melanocyte activity [4] - Some users may experience skin darkening due to low UPF masks or improper maintenance, leading to UV penetration and skin irritation [4] Group 3: Recommendations for Consumers - Consumers should prioritize masks with a UPF greater than 40, with UPF above 50 being ideal, and ensure the mask covers the necessary facial areas effectively [6] - Regular replacement of sunscreen masks is essential as their protective effects diminish over time and with washing [6] - It is advised to clean masks regularly to prevent oil and dirt buildup, and to apply sunscreen on uncovered areas of the face [6]

Core Viewpoint - The article emphasizes the importance of selecting effective sun protection products, particularly focusing on the ultraviolet protection factor (UPF) for clothing and accessories to ensure adequate UV protection during summer [1][2][3][4]. Group 1: Sun Protection Clothing - Consumers should pay attention to labels indicating UV protection functionality and UPF values when selecting sun protection clothing, with UPF values greater than 40 being considered qualified [2][1]. - The fabric density and color of the clothing also play a significant role in UV protection, with denser fabrics and lighter colors generally providing better protection and comfort [2][1]. Group 2: Sun Protection Hats - Various types of sun protection hats are available, including open-top hats, wide-brimmed fisherman hats, and baseball caps, each suitable for different outdoor activities [3]. - When purchasing sun protection hats, consumers should look for those that explicitly state their UV protection standards and UPF values, ensuring they meet the requirement of UPF greater than 40 [3]. Group 3: Other Sun Protection Accessories - Additional sun protection items such as masks and sleeves are also important, with different styles available for various needs, including head-worn and neck-covering designs [4]. - Consumers should consider the UPF value and cooling properties of these accessories, ensuring they are purchased from reputable sources with complete label information [4].