What does SPF rating mean?Updated 2 hours ago
SPF refers to a sunscreen’s “Sun Protection Factor” rating, which indicates how well a sunscreen protects your skin from UVB rays that can cause sunburn.
It tells you how much longer you can stay in the sun without burning compared to not wearing sunscreen. Red Aspen’s MineralMilk™ Sunscreen is an SPF 50 formula.That means you can be in the sun 50 times longer before you start to redden than if you had no protection.