The PA value of Mineral Sunscreen is an index indicating that the product blocks long-wave UVA in sunlight. There are also some products in the market that contain PA coefficients. UVA damage to the skin is long-term and chronic, causing the skin to be tanned. Use sunscreen products with SPF values to help protect your sunscreen. If you want to sunscreen and not tanning, it is best to choose a sunscreen that contains both SPF and PA.
The coefficient of PA is represented by "+". Generally PA+ means inefficient protection; PA++ is medium efficiency protection;
PA+++ is highly effective protection. There are also products that use UVA to express the sunscreen black coefficient, such as UVA12. The higher the numerical value, the harder it is to be tanned.