Sun Tan Lotion Spf Meaning

Spf or sun protection factor numbers were introduced in 1962 to measure a sunscreen s effect against uvb rays.

Sun tan lotion spf meaning.

Spf or sun protection factor is a measure of how well a sunscreen will protect skin from uvb rays the kind of radiation that causes sunburn damages skin and can contribute to skin cancer. But what do the spf numbers on bottles of sun lotion actually mean. If your skin would normally burn after 10 minutes in the sun applying an spf 15 sunscreen would allow you to stay in the sun without burning for. This is the number then that appears on the bottles of sun block and sun tan lotion.

Spf stands for sun protection factor. Despite being spf 50 it features a natural tint for all skin tones and all sensitive skin types so you can still glow without fear of turning into a lobster. Instead a product that is considered to be a suntan lotion is usually a sunscreen with an spf of less than 15. To determine a sunscreen s spf testers round up 20 sun sensitive people and measure the amount of uv rays it takes them to burn without sunscreen.

Simply put an spf rating tells you how long you can stay in the sun without getting burned while wearing that sunscreen compared with how long you can stay in the sun before you burn without wearing that sunscreen. A little sunscreen will see me through the day. Spf as most people are aware stands for sun protection factor. We all know that the higher the sun protection factor of a sun lotion the less likely we are to burn.

This is also how you can still get tan while wearing sunscreen. According to the skin cancer foundation 3 percent of uvb rays can enter your skin with spf 30 and 2 percent with spf 50. These tanning sunscreens which typically have an spf 4 to spf 8 do not provide enough sun protection especially for kids. La roche posay anthelios 50 ultra light tinted mineral sunscreen spf 50 this oil free sunscreen has a ton of spf which honestly can only be a good thing.

For example if it typically takes you 15 minutes to burn without sunscreen and you apply an spf 10 it will take 10 times longer 2 5 hours. Then they redo the test with sunscreen. The higher the number of course the more protection the sun block provides against uv rays and the safer you should be from getting sun burn but it can also be more complex than this. Sunscreen also known as sunblock or suntan lotion is a lotion spray gel foam such as an expanded foam lotion or whipped lotion stick or other topical product that absorbs or reflects some of the sun s ultraviolet uv radiation and thus helps protect against sunburn diligent use of sunscreen can also help to slow or temporarily prevent the development of wrinkles dark spots and.