Japan uses the PA classification system to measure UVA protection.

    PA+ is PPD 2 to 4
    PA++ is PPD 4 to 8
    PA+++ is PPD 8+.

    From 2013 onward, the highest rating (PA+++) will be replaced by PA++++. PA+++ will be PPD 8-16 and PA++++ will be PPD 16+.

    Please read Japan PA System for UVA Protection Revised for more information.