PA+++ ek Japanese grading system hai jo batata hai ki UVA radiation se kitna protection milega. Iska matlab high level ka protection hai against harmful UVA rays. PPD value ka matlab Persistent Pigment Darkening method ke through dekha jaata hai, jismein value 8 se lekar 16 ke beech hoti hai. Basically jab tum sunscreen lgate ho aur PA+++ likha ho toh samjho ki tere skin ko kaafi zyada UVA protection mil raha hai.