Sunscreen tips that novices must see!

The following are some important sunscreen knowledge for beginners' reference:

1. The importance of sun protection: Sun protection is not only to prevent tanning, but also to protect the skin from ultraviolet rays and prevent skin aging and cancer.

2. Harm of ultraviolet rays: ultraviolet rays are divided into UVB, UVA and UVC, among which UVC is absorbed when entering the ozone layer, which has little impact on human body, while long-term exposure of UVB and UVA to sunlight may lead to skin cancer, stratum corneum cancer and other problems.

3. Sunscreen skills: Choose appropriate sunscreen products, such as physical sunscreen and parasols; Pay attention to SPF and PA values and understand the protective effect of sunscreen on UVB and UVA; Avoid prolonged exposure to strong sunlight, such as 10 from morning to 4 pm.

4. Sunscreen components: The main components of physical sunscreen are titanium dioxide and zinc oxide, while chemical sunscreen contains chemical components such as p-aminobenzoic acid and its derivatives and cinnamic acid.

5. Misunderstanding of sun protection: Sun protection is not only to prevent tanning, but also to worry about insufficient absorption of vitamin D. Exposing hands and feet to the sun for 10- 15 minutes every day can produce enough vitamin D.

In a word, sun protection is an important measure to protect skin health, which requires us to pay attention to and take appropriate measures to protect it.