What is the reason for sunscreen to be oily? Can I still use sunscreen if it is oily?

The sun is very strong today and I wanted to apply some sunscreen before going out, but I found that the sunscreen was oily as soon as I poured it out. What's going on? Can I still use the sunscreen that produces oil?

The main reason why sunscreen is so oily is due to its chemical composition. The texture of chemical composition is relatively thick, and it forms a protective film when applied, so it generally does not feel refreshing. However, sunscreen is still essential for everyone's daily life. Sunscreen can effectively resist the damage of ultraviolet rays to our skin and delay aging.

It cannot be used. After the oil and water are separated, there is no use value. The reason why the sunscreen squeezes out the oil:

1. This situation will occur if the device is opened and not used for a long time.

2. Improper emulsifiers are used in the formula;

3. Improper control of speed, time or temperature during product emulsification;

Sunscreen comes off when you sweat.

Sunscreen stays on the surface of the skin and will be lost with sweating. It should be applied every 1-2 hours to ensure the sun protection effect. In addition to the face, other exposed parts such as the neck and arms can also be applied with sunscreen.

Although the sun is strong in summer, ultraviolet rays are present every day. If conditions permit, sunscreen should be applied all year round, even in rainy weather, especially for people who often work and do activities outdoors. Sunscreen should be applied 20-30 minutes before going out. Applying it once will not last all day. It should be reapplied frequently.

If you use a waterproof sunscreen, it will still be effective after sweating, but the sun protection effect may be affected. If you use a non-waterproof sunscreen, it will gradually be lost with sweat and will no longer have any sun protection effect.