How does sunscreen work? Will sunscreen harm the skin?

Sunscreen is always applied as the last step of skin care. When applying sunscreen, spread it evenly on the skin and pat it gently to absorb. So how does sunscreen work? Will sunscreen harm the skin?

How sunscreen works

The principles of sunscreen are divided into physical principles and chemical principles. Physical principle: Sunscreen agents in sunscreen use physical methods to block ultraviolet rays, such as titanium dioxide and zinc oxide. When sunlight shines on the surface of titanium dioxide or zinc oxide, these fine particles can reflect ultraviolet rays, thereby reducing absorption.

Does sunscreen harm the skin?

Sunscreen can cause certain damage to the skin, so you need to remove makeup before daily use. The reason why sunscreen can protect against the sun is because it contains sunscreen ingredients. These ingredients will adhere to the surface of the skin and penetrate into the skin along with sweat and oil secreted from the face. If this continues for a long time, it will clog the pores and even cause acne. When using it alone, be sure to remove makeup and use professional makeup remover to clean it.

Will sunscreen clog pores?

Wearing sunscreen may clog your pores. Sunscreen refers to items that have added sunscreens that can isolate or absorb ultraviolet rays to prevent the skin from tanning or sunburn. However, sunscreen is essentially a cosmetic and contains chemical ingredients. Frequent use will more or less have a certain impact on the skin, but this impact is much smaller than the impact caused by ultraviolet rays. Applying sunscreen correctly will not clog the pores, but if used improperly, it is very likely to cause the skin pores to be clogged.

Which sunscreen is more likely to clog your pores?

1. Physical sunscreen: The main ingredient of physical sunscreen is oil, so it is more suitable for sensitive skin and dry skin. However, the disadvantage of oil is that it can easily clog pores. In comparison, chemical sunscreen is not easy to clog pores, but it is more irritating to the skin than physical sunscreen, so it is not suitable for sensitive skin and dry skin.

2. High-factor sunscreen: Each bottle of sunscreen has its own SPF. The higher the SPF, the stronger its ability to block ultraviolet rays. At the same time, it is more likely to clog pores. Because high-factor sunscreen is usually thicker, it is more likely to increase the burden on the skin when used. Similarly, waterproof and sweat-resistant sunscreens are also more likely to clog pores.