Do you need to remove chemical sunscreen? If you don't remove it, be careful of spots.

Sunscreens can be divided into physical sunscreens and chemical sunscreens. There are huge differences between the two, and they also differ in terms of whether they require makeup removal. Let's see if chemical sunscreens require makeup removal.

Do I need to remove chemical sunscreen?

Chemical sunscreens require makeup removal because chemical sunscreens can easily penetrate the skin, especially the small molecules after degradation, which are more easily absorbed by the skin, leaving decomposition residues in the skin that cannot be removed with facial cleansing products alone. Over time, spots will form. Therefore, even if you only apply chemical sunscreen, you need to remove it with makeup remover products first, and then use facial cleansing products for secondary cleansing.

How often should you reapply chemical sunscreen?

Chemical sunscreen works by absorbing and dissolving ultraviolet rays. To a certain extent, while ultraviolet rays are being absorbed, the chemical sunscreen is also oxidized. When the absorption reaches a certain level, the sunscreen effect is weakened. Therefore, chemical sunscreen needs to be reapplied more frequently, at least every three or four hours, and once every two hours in case of continuous exposure to the sun.