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夏季护肤做好防晒是关键 专家教你如何选择防晒霜
Yang Shi Xin Wen·2025-05-28 05:35

Group 1 - The core viewpoint emphasizes the importance of sun protection during summer due to increasing UV radiation, which can cause skin damage [1] - Experts categorize sun protection into two types: physical sun protection and the application of sunscreen [2] - Long-wave and medium-wave UV rays from sunlight can lead to skin aging, fine lines, and sunspots, making sun protection crucial, especially for those with sun allergies [4] Group 2 - For sunscreen that has not been opened, it can be used within three years of the production date if there are no signs of separation or unusual texture [6][8] - Opened sunscreen, particularly those with a shaking mechanism, should be shaken well before use, while lotion-type sunscreens should not be used if stored for more than six months [10] - Different demographics and skin types require tailored sun protection methods, with special attention needed for vulnerable groups [10] Group 3 - Special populations, such as the elderly, pregnant women, and those with sensitive skin, should prioritize physical sun protection methods like using umbrellas or hats, and choose less irritating sunscreens [11] - Infants under six months should avoid sunscreen products, relying instead on physical shade, while those over six months can use baby-specific sunscreens moderately [11] - Recommendations for sunscreen include SPF greater than 30 and PA rating of at least two pluses for regular activities, and SPF greater than 50 with PA rating of three pluses for intense sun exposure [13]