Second, how to know the PA value? PA+ Effective protection time is about 4 hours. PA++ Effective protection time is about 8 hours. pa++ Super protection. I also remind you not to buy sunscreen products cheaply. Because the cost of sunscreen raw materials is relatively high, it is impossible for cheaper sunscreen products sold in small commodity markets to contain sunscreen ingredients, so it is more reliable to go to reputable shopping malls.
Third, the skin after swimming is actually very dirty. Your skin is not clean after swimming. This is the water quality of the swimming pool. Because swimming venues are generally used continuously, it is difficult to guarantee the hygiene standards. The free residual chlorine in water with PH value is greatly reduced, the contents of ammonia, hydrogen and urea are increased, and bacteria such as coliforms multiply in large numbers, which increases the turbidity of water. In swimming pools, chlorine is often added or recycled to keep the pool water clean, which will increase the concentration of chlorine. At 2-3PPM, people will feel the obvious chlorine smell, and of course they will stick to their bodies. In addition, swimming will inevitably bring skin excrement, shed hair, snot, sweat, body fluids, and even urine and swimsuit dyes and fibers into the water. Polluted water often causes diseases of eyes, nose, ears, throat, skin, gastrointestinal tract and reproductive system. It's creepy to see this. Not going swimming is a negative and effective method, while the positive and effective method is to wash your body carefully after swimming. You can use a bath such as "swimming dew" for cleaning. This product can help you remove fungi and bacteria, and has skin care function. It can also remove chlorine smell and bleaching powder from the body after swimming, making the skin clean, smooth and moist. In addition, you can also apply anti-chlorine emulsion before swimming. When this emulsion is applied to the body, it will produce a layer of isolation effect on the skin, which will isolate the skin from water containing too much chlorine, thus playing a role in protecting the skin and preventing the skin from feeling dry due to too much chlorine in the water.
Fourth, the skin should be moisturized after swimming. "If you don't dry your body immediately after swimming, your skin will become very dry." Do you feel this way? Because if there is not enough moisture in the air, the skin will absorb the moisture on the skin surface during the process from wet to dry, which is more obvious in the northern region. Therefore, the best nursing method is to dry the water drops immediately after taking a bath and coming out of the water. If it is not midsummer, you should also apply skin care products with moisturizing effect. When applying, apply it to every part of the body, and then do a gentle massage to help the nutrition be absorbed as soon as possible.