The SPF (Sun-Protection Factor) is the number used to tell the level of skin protection from the sun. The different numbers determine. How much UVB protection is more protective than normal body. However, SPF does not show the effectiveness of UVA protection. For example, people who don’t use sunscreen have reddened skin after exposure to the sun time 15 minutes. And those who use sunscreen at SPF 30 will have such symptoms. After being in the sun for 450 minutes, calculated from the normal time that the skin is resistant to sunlight multiplied by the SPF value that protects the skin from sunlight up to 30 times.
In addition, the protection of the skin from the sun depends on many factors. Including the amount of time in the sun. UFABET The time of sun exposure, environment, season and weather. As well as the intensity of sunlight. Friction, sweat or water, which may cause the effectiveness of the SPF in the actual sunscreen to be lower. Than the value obtained in the lab. People who use sunscreen should therefore avoid being outdoors in the sun for a long time. And must always reapply sunscreen or reapply every 2-4 hours.
Benefits of sunscreen.
Sunscreen protects the skin from UVA and UVB rays. Those who use sunscreen regularly can enjoy these benefits.
- Prevent the risk of skin cancer easily.
- Protect your skin from sunburn or damage.
- Helps prevent premature aging skin Resulting in no dark spots or blemishes on the face and other parts of the skin.