반응형 sunscreen#SPA#health#lifestyle#healthyfood#habits#face#facial#face#1 Sunscreen: Understanding SPF and PA Indices for Effective Protection “How to Apply Sunscreen Effectively: Tips for UV Protection” What are SPF and PA ratings? Sunscreen plays a crucial role in safeguarding your skin from harmful ultraviolet (UV) rays. Two essential indices—SPF (Sun Protection Factor) and PA (Protection Grade of UVA)—are used to evaluate the effectiveness of sunscreen. SPF (Sun Protection Factor): SPF measures protection against UVB (ultraviolet B.. 2024. 3. 16. 이전 1 다음 반응형
