Do I need to use a higher SPF sunscreen to block the sun better?
- Sunscreen not only prevents tanning, but also prevents ultraviolet rays from damaging the skin. SPF represents the protection of the sunscreen product against UVB. When using SPF15 sunscreen, it can extend the time by 15 times, that is, after 300 minutes The skin will be tanned. The calculation formula of using SPF30 to protect against UVB: According to the time when the skin is red in the sun *SPF value (30) = the effective time of sunscreen to protect against UVB. In sunscreens, the higher the SPF, the better the defense effect of PA+. The longer the sunscreen, the lower the risk of skin damage and tanning, so PA+++ is very effective.