2.Apply sunscreen: When buying sunscreen, you need to choose one that suits you. Remember to reapply sunscreen regularly. If you have a water trip, it is recommended to buy ocean-friendly sunscreen to protect natural creatures. For related sunscreen knowledge, please refer to the extended reading.
UV-A (wavelength 280~320nm): cause skin redness and sunburn. UV-B (wavelength 320~400nm): skin melanin precipitation and aging.
The higher the SPF/PA value, the stronger the protection, which also means that the thicker the texture makes the skin less permeable and prone to acne and allergies.
Generally speaking, you can get the best sun protection effect by applying sunscreen every two hours during outdoor activities.
SPF10~20/PA+~++: general daily activities such as going out for a short time shopping.
SPF20~30/PA++: Perform light physical activity outdoors.
SPF30~55/PA+++~: Long-term intense sun exposure, such as playing in the beach and water sports.
Oil-water double-layer sunscreen: Usually, please shake it evenly or put in rolling balls before use. This kind of sunscreen has better water resistance, but the waterproof performance needs to refer to the bottle label. Generally, most of the commercially available sunscreens fall into this category. Gel-type sunscreen: A gel-like sunscreen that is dry and not sticky. It is easy to lose the sunscreen effect due to sweating. It is easy to clean and only needs to be washed with water.
The specific ingredients of sunscreen lotion will bleach the corals in the sea, increase the mortality rate, damage coral DNA, and feminize adult male fish, which, in short, threatens the survival of marine life. Whether it is in freshwater waters, swimming pools, or oceans, if you put on sunscreen and go into the water, the water will eventually return to the ocean, posing a threat to sea creatures. With the advancement of science and technology, these ingredients harmful to the marine environment have been identified one by one. They should be excluded as much as possible from the ingredients of sunscreen. Choose ocean-friendly sunscreen (labeled Ocean Friendly) to take care of the environment.