Does sunscreen really protect against the sun? The correct way to apply it

Sunscreen. As soon as you see the name, you know that this sunscreen has functionality. But can this sunscreen really protect you from the sun? What are the correct ways to apply sunscreen?

Does sunscreen really protect against the sun?

Sunscreen can really protect against the sun. Sunscreen is divided into two types: physical sunscreen and chemical sunscreen. Physical sunscreen uses sunscreen atomic particles. When the user applies physical sunscreen on the skin, the sunscreen forms a sunscreen film on the skin, which reflects sunlight and achieves the purpose of sun protection. Chemical sunscreen uses the molecules of chemical sunscreen to absorb ultraviolet rays in the sun, so that the ultraviolet rays are absorbed and then released at a lower energy, thus avoiding direct damage from ultraviolet rays. Sunscreen can provide sun protection to a certain extent, but only when it is used correctly can it achieve the desired effect.

The correct way to apply sunscreen

1. Clean your skin, apply an appropriate amount of moisturizing lotion on your body, and do a good job of moisturizing your skin;

2. 30 minutes before going out, take enough sunscreen and apply it evenly on the skin. Be sure to pay attention to the technique when applying the sunscreen, push the sunscreen parallel to the skin, and remember not to apply it by patting or massaging;

3. Pay attention to small details when using sunscreen. All skin exposed to the sun needs to be applied with sunscreen, otherwise it will cause uneven skin tone;

4. After being outdoors, you need to reapply sunscreen every 2 hours. It is recommended to use a sunscreen spray when reapplying sunscreen. This is because the water molecules in the sunscreen spray are more easily absorbed than sunscreen, thus avoiding ultraviolet rays from tanning the skin during the time difference between reapplication.

Sunscreen can protect you from the sun, but you have to be careful about how you apply it.