Wang Baoxi, chief physician of the Department of Dermatology, Plastic Surgery Hospital, China Academy of Medical Sciences, said in the live broadcast of popular science consultation on the client side of People's Good Doctor that sunscreen with high SPF value will feel more greasy after being applied, so it should be cleaned with saponified cleaning products with strong degreasing power after going home.

Wang Baoxi said that medical zinc oxide, as a skin astringent, does have a strong physical sunscreen effect and is the main component of many sunscreens, but the fly in the ointment is that it is thick, greasy and shiny after being applied. ?

"Don't forget sun protection when you go out, and remember to remove makeup when you go home, especially when you sleep at night. Otherwise, excess oil will easily block pores and cause acne and acne. " Wang Baoxi said, "When using sunscreen to remove makeup, soap may be more effective than facial cleanser and shower gel. This is because many facial cleansers on the market are not saponified cleaners, and the deoiling effect is weak. "

Wang Baoxi pointed out that dermatologists often advise people with acne that if they get a lot of oil, they should use warm water when cleaning at night, and then use sulfur soap for local cleaning.

If you just get oily or feel greasy after applying sunscreen, you don't need to use sulfur soap, you can use ordinary soap. If the oil is not thoroughly removed at one time, it can be washed two or three times.

Precautions for using sunscreen products in extended materials:

1, about 20 minutes before going out.

Sunscreen should be applied about 20 minutes before going out, because sunscreen can also have sunscreen effect without application, and it takes time for skin to absorb it. Moreover, the sunscreen effect will not last all day, so when you sweat too much or apply sunscreen for a few hours, you should reapply sunscreen.

2. Don't mix different brands of sunscreen.

Many people use several brands of sunscreen in order to completely protect themselves from the sun and keep their skin fair and delicate, in pursuit of better sunscreen effect.

This is not right. When many brands of sunscreen are mixed together, not only will several sunscreens repel each other, but they will not achieve the ideal sunscreen effect, and may also cause allergies. In fact, many excellent sunscreens have a good sunscreen effect, so you don't need to use so many products.

3, the dosage should be enough

Usually, the sunscreen cream is applied to the skin at a dose of 2 mg per square centimeter, which can achieve the due sunscreen effect. And SPF values cannot be accumulated. Two layers of SPF 10 sunscreen have only one layer of SPF 10. Don't mix different brands of sunscreen, which will increase the possibility of skin allergies.

4, timely makeup sunscreen effect is more lasting.

All the sunscreen products we buy are marked with SPF coefficient, but these reference coefficients are all measured in the laboratory, so they are not completely consistent with our daily situation.

Because you sweat, you will be exposed to the sun for a long time, so if you want to keep the sunscreen effect lasting, you must apply sunscreen products. It is generally recommended that you apply sunscreen every 2 to 3 hours, and the amount of sunscreen should be half that of the first application.

People's Network-Don't forget to protect yourself from the sun when you go out. Remember to remove makeup when you go home.

People's Daily Online-Summer Skin Care: How to Use Sunscreen Correctly