![]() The SPF 30 sunscreen only offers 4% more protection than the SPF 15 sunscreen, to put it another way.ħ out of every 100 photons can pass through SPF 15 (93% protection).ģ out of every 100 photons can pass through SPF 30 (97% protection).Ĭonsequently, an SPF 30 will block half the radiation that an SPF 15 would let through to your skin, even if you may not be double your degree of protection. This is an approximate estimate that is influenced by the kind of skin, the amount of sunscreen worn, and the intensity of the sun. A product's label should always include the terms "broad spectrum," which denotes the presence of ingredients that may shield you from UVA as well as UVB radiation.Īpplying an SPF 15 sunscreen would allow you to stay in the sun without burning for roughly 150 minutes if your skin ordinarily burns after 10 minutes in the sun (a factor of 15 times longer). Sunburn is also caused by UVA radiation with the shortest wavelengths. UVA rays harm the skin, resulting in tanning, skin ageing, and wrinkles. The SPF number of a sunscreen primarily describes how much UVB protection it offers. UVB rays are responsible for sunburn and are crucial in the growth of skin cancer. There are two types of UV radiation that can harm the DNA in your skin cells and cause skin cancer, therefore you should protect your skin from them. The higher the number, the less UV passes through.ĭetails you need to know to know your Sunscreens better! SPF simply measures how much UV light penetrates the screen. The sun cream or potion of your choice similarly permits a tiny amount of UV radiation to touch your skin. ![]() It restricts the movement of the solid elements while allowing the liquid portion to pass through. Here, it's necessary to keep in mind that sunscreen acts as a screen rather than a block. ![]() In comparison to the period of time without any sunscreen, the SPF rating indicates how long it would take the sun's UV rays to cause your skin to get red. SPF In Sunscreen: What Is It And How Does It Work?Ī sunscreen's SPF, or Sun Protection Factor, indicates how well it will shield your skin from UVB radiation.
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