How often should you reapply sunscreen? How to determine the film formation of sunscreen

The most important thing about sun protection is physical sun protection, so we try not to go out, but we will still be exposed to the sun. At this time, sunscreen is very important. When going out, we must reapply sunscreen frequently. So how often should we reapply sunscreen? Let’s take a look together.

How often should you reapply sunscreen?

If you are indoors, you only need to reapply once at noon. If you are outdoors, you need to reapply every 2-3 hours. Frequent sweating may cause the loss of sunscreen, so you need to reapply more frequently, otherwise the sun protection effect will not be very good.

How long does it take for Anessa to form a film?

Anessa sunscreen will generally form a film 3-5 minutes after application, so when using it, you have to wait until the sunscreen forms a film before applying subsequent makeup. After applying sunscreen, look in the mirror to see if there is a thin film on your skin. If there is a thin film on the surface, it is almost in the film-forming state. You can also touch your face with your hands. If the skin is still sticky, it may be that no film has formed. If the skin surface is smooth, it means that the sunscreen has formed a film.

How to judge the film formation of sunscreen

Generally, sunscreen will form a film 3 to 5 minutes after application, or your face will look bright when you look in the mirror and feel smooth to the touch, like a layer of film. At this time, the sunscreen has formed a film. As we age, we increasingly realize the importance of sun protection. Under the irradiation of ultraviolet rays, epidermal cells are damaged, melanocytes become active, and the production of melanin is accelerated, leading to darkening; the elastic fibers in the dermis are destroyed, fine lines are produced, and inflammation can also occur.

Should I use sunscreen before going out?

It is best to use sunscreen before going out, you can use it half an hour before going out. After application, let the sunscreen form a film. After a period of time, it will form a film. This is the best time for the sunscreen to take effect. Isolation should be used after sunscreen. Strictly speaking, sunscreen still belongs to the category of skin care products, while isolation cream belongs to the category of cosmetics, so isolation cream should be used before sunscreen.