What are the methods of sun protection?

1, keep out the sun at all times, and try not to go out in the sun, especially during the period when the sun is strongest from 9 am to 4 pm.

2. Use hard sun protection when going out, try to wear sun protection clothes, sun protection caps and umbrellas to block ultraviolet rays.

3. Use sunscreen correctly and stay indoors for a long time, with SPF between 10 and 20; Stay outdoors for a long time, SPF is between 20-30; For those who travel to the plateau, snow-capped mountains and seaside, the SPF is greater than 30. The amount of sunscreen should be sufficient, and the amount of sunscreen products should be 2mg/cm2 on the skin as the standard for detecting SPF. The skin area of an adult's face is about 350-450 square centimeters, and the amount of sunscreen products should be 0.7-0.9 grams, so 30 grams of sunscreen products should be applied to the face once a day, which is only enough for about one and a half months.

4. Use sunscreen 20 minutes in advance. Use this time to volatilize water, so that the film-forming agent can be spread into a smooth coating, and the sunscreen components can be attached to the skin to avoid loss due to sweating and other reasons, which is helpful to maintain the sunscreen effect. Therefore, it is recommended to apply sunscreen products in advance if conditions permit.