SPF stands for Sun Protection Factor. When you see SPF 50 on a sunscreen, it means the product is designed to block about 98% of UVB rays1. UVB rays are the type of ultraviolet radiation that causes sunburn and can contribute to skin cancer.

Yes, sunscreen is good for the skin. It helps protect against harmful UVB rays, which can cause sunburn and contribute to skin cancer. Using sunscreen regularly can prevent premature aging, such as wrinkles and dark spots, and maintain overall skin health. It's important to choose a sunscreen that suits your skin type and provides broad-spectrum protection with an appropriate SPF level.

SPF, or Sun Protection Factor, measures the level of protection a sunscreen provides against UVB rays, which are responsible for sunburn and can contribute to skin cancer. For example, SPF 50 means the sunscreen blocks about 98% of UVB rays. On the other hand, PA stands for Protection Grade of UVA, which measures protection against UVA rays that penetrate deeper into the skin, causing premature aging and contributing to skin cancer. The PA rating system, originating in Japan, uses a "+" scale, ranging from PA+ to PA++++, with more "+" signs indicating higher protection. Together, SPF and PA ratings help you choose a sunscreen that offers comprehensive protection against the sun's harmful effects².

Yes, it's important to apply sunscreen every day, even when it's cloudy or you're indoors. UV rays can penetrate through clouds and windows, causing skin damage over time. Daily use of sunscreen helps protect your skin from harmful UV rays, reducing the risk of sunburn, premature aging, and skin cancer. It's a simple yet effective step to maintain healthy skin. Do you have a favorite sunscreen or any specific concerns about using it daily?