Group 1 - The article highlights the upcoming peak of extreme high temperatures in China, affecting a large area from southern North China to central and northern South China, with many regions experiencing rare high temperatures for this time of year [1] - Experts recommend avoiding outdoor activities between 10 AM and 4 PM when UV radiation is strongest, and suggest carrying sun protection gear such as umbrellas, sunglasses, and sunscreen [1] Group 2 - According to Dr. Yang Shuxia, the director of the Dermatology Department at Peking University First Hospital, darker clothing provides better sun protection due to its higher dye concentration, which absorbs more UV rays [2] - The article emphasizes that even on cloudy days, about 70% of UV rays can penetrate clouds, making it essential to apply sunscreen regardless of weather conditions [3][4] Group 3 - For prolonged outdoor activities, experts recommend a combination of physical and chemical sun protection, including UPF 50+ clothing, wide-brimmed hats, and SPF 30+ sunscreen, applied 20 minutes before going outside and reapplied every two hours [5][6] - In case of sunburn, immediate cooling with lukewarm water and the application of aloe vera or vitamin E products are advised, with a recommendation to seek medical attention for severe cases [7]

Core Viewpoint - The article emphasizes the increasing skin damage risks due to high temperatures and UV exposure, highlighting the importance of protective measures and the role of natural antioxidants like astaxanthin in skincare during summer [1][3][5]. Group 1: Skin Damage from Heat and UV Exposure - High temperatures and UV rays can lead to skin aging through mechanisms like photoaging and thermal aging, which degrade collagen and weaken the skin barrier [1][3]. - UV exposure generates free radicals that damage skin cells, leading to oxidative stress and accelerated aging [3][5]. Group 2: Protective Measures and Recommendations - Experts recommend avoiding prolonged sun exposure and implementing physical sun protection as the first line of defense [1]. - A diet rich in antioxidants is advised to enhance skin resilience from within [1]. Group 3: Role of Astaxanthin - Astaxanthin is highlighted for its strong antioxidant properties, capable of neutralizing free radicals generated by UV and heat exposure, thus protecting skin cells and slowing aging [3][5]. - The unique molecular structure of astaxanthin allows it to absorb UV rays effectively, providing comprehensive protection against skin damage [5]. Group 4: Product Spotlight - The "Green A Anti-Aging Astaxanthin" product stands out in the market due to its advanced extraction technology and formulation, which includes collagen peptides and GABA for enhanced skin protection [7]. - This product aims to combat the dual threats of photoaging and thermal aging, offering deep care for the skin during high-temperature conditions [7].