Generally, UVA and UVB are ultraviolet rays that can reach the ground, and ultraviolet protection is mainly to prevent these two bands. Usually pay attention to hard sunscreen, and pay attention to choosing full-band sunscreen when choosing sunscreen.
Some sunscreens don't have a full range of sunscreens. If you don't know how to choose, you can choose physical sunscreen, because physical sunscreen is a full range of sunscreen.
Attention should be paid to the following conditions when sunscreen:
Diet: drink milk and drink plenty of water (not less than eight glasses of water) every day; You can eat meat during the day, eat less vegetables, and eat more vegetables at night (science shows that most vegetables are photosensitive and will turn black when eaten during the day); Eating more fruits containing vitamin C is not only good for your health, but also has whitening effect. Mutton soup also has whitening effect. Eating more tomatoes will also play a role in sun protection. Eating tomatoes before meals can also help you lose weight.
Skin care: wash your face with weak acid facial cleanser, and then rinse it with milk; Do a good job of hydrating the skin, and don't use greasy lotion and cream; Apply mask, moisturizing mask can be applied every day, cleaning mask once a week, whitening mask three times a week, and mask for 20 minutes. A good and cheap skin care method is sleeping. Keeping enough sleep will make your skin shiny and elastic.
Sunscreen products: sunscreen cream, sunscreen spray, sunscreen clothing, sunscreen sleeves, umbrellas, hats, sunglasses, etc. Is essential. Sunscreen should be applied 20 minutes before going out, and choose the one with high SPF index (also according to the skin and travel situation). The higher the SPF index, the longer the sunscreen time. Take sunscreen spray with you and spray it every day in summer. The best way to go out armed is not to go out (usually not, to work).
The amount of sunscreen: Now many products will add sunscreen value, such as foundation, isolation, powder cake and so on, but sunscreen can not be saved. I have seen the test before, and the sunscreen needs to be applied in sufficient amount to reach the marked sunscreen value.
The dosage at one time is 1ml, which is equivalent to the size of 1 yuan coin. So much dosage will inevitably make you feel uncomfortable, and we can't use so many products besides sun protection, so we can't achieve the due sun protection effect. Under normal circumstances, a bottle of 60ML sunscreen should only be used for painting the face for two months without makeup.
No matter whether there is sun or not in summer, you should do a good job of sun protection and repair it in time after sun exposure.