What does PA++++ mean on sunscreen?

PA (Protection Grade of UVA) is a rating system developed in Japan and widely used in Asian sunscreens that measures UVA protection. The plus signs indicate increasing levels: PA+ (some), PA++ (moderate), PA+++ (high), and PA++++ (extremely high) UVA protection. Higher PA ratings mean stronger protection against UVA rays responsible for aging and skin cancer. It complements the SPF rating, which measures UVB protection.