What weather needs sun protection?

Several periods when ultraviolet rays are strongest:

1, the strongest: it clears up after the rain, and when the sun comes out, most of the water vapor in the sky has already landed on the ground, and there are few particles blocking ultraviolet rays in the air, which is the strongest time for ultraviolet rays. Many people are allergic to ultraviolet rays at this time.

2, continuous sunny and hot weather, especially when the sky is in good condition, that is, there is not much dust and clouds in the sky, the ultraviolet rays are very strong.

In addition, sun protection common sense

1, don't use too strong sunscreen, it will clog pores and be bad for your skin. Generally, a quarter is enough.

2, in fact, sunscreen is either not used or used a lot, and it is useless to apply a little.

There are two misunderstandings. First, some sun umbrellas in China have poor anti-ultraviolet ability, but sunglasses. Please check the precautions when using sunglasses, otherwise, it will hurt your eyes.