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SPF stands for sun protection factor. Higher SPF numbers would allow a person to be in the sun longer without burning. SPF 30 means that your skin will not burn until it has been exposed to 30 times the amount of solar energy that would normally cause it to burn. In other words, if you start to burn at 10 mins, applying an SPF 30 would know take 300 mins. to start burning (30x10= 300). However, there are many limitations to this rating (time of day, skin type, uv index, sunblock brand, water, sweat etc...) Also, SPF is just the protection factor against sunburn or UV B radiation and does not have any relation to UV A radiation, which causes long term skin damage.
Ashley Champlin
Wiki User
∙ 14y agoSPF stands for sun protection factor. Higher SPF numbers would allow a person to be in the sun longer without burning. SPF 30 means that your skin will not burn until it has been exposed to 30 times the amount of solar energy that would normally cause it to burn. In other words, if you start to burn at 10 mins, applying an SPF 30 would know take 300 mins. to start burning (30x10= 300). However, there are many limitations to this rating (time of day, skin type, uv index, sunblock brand, water, sweat etc...) Also, SPF is just the protection factor against sunburn or UV B radiation and does not have any relation to UV A radiation, which causes long term skin damage.
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What does the SPF number on the sunsceen label mean?
The SPF number on a sunscreen label stands for Sun Protection Factor. This means if the SPF is 30, this means you can stay in the sun 30 times longer than you would be able to without wearing sunscreen.
What spf number do doctors recommend when exposing yourself to the sun?
An SPF of about 30
What lip gloss has the highest SPF?
Neutrogena makes a spf 30 lipgloss.
What spf number do doctors recommend?
It has been recommended my medical experts that you should apply sun-screen with a minimum Sun Protection Factor (SPF) of 30. SPF 30 means it can protect you 30 times better than if you didn't have it. Remember that even if you have sunscreen on, you can still get sunburnt. The best sun protection is still shade. Avoid the sun during 11am and 2pm where the sun is most intense.
Would adding spf 30 sunscreen to spf 50 sunscreen make it spf 80 sunscreen?
No. SPF 30 lets in 1/30 of burning UV rays, while SPF 50 lets in 1/50. Adding the two together is pointless and would not result in high levels of skin protection.
What rays does SPF block?
Should be UVA and UVB. Read the labels, and use at least SPF 15 up to SPF 30 if you are very fair or freckle easily.
What is the highest SPF facial sunblock can be purchased in?
It was probably SPF 30 because that blocks 96.7% of UVB rays. SPF 50 blocks 98% so you aren't really getting that much more protection than the SPF 30. Neutrogena has a SPF 100 but it really isn't necessary because as I said, SPF 30 is already blocking a significant amount, and SPF 50 doesn't even make that much more of a difference. Just for your information, SPF 100 blocks 99% of UVB rays so it REALLY doesn't do much more than SPF 50.
What SPF do doctors recommend you use when exposion yourself to the sun?
It has been recommended my medical experts that you should apply sun-screen with a minimum Sun Protection Factor (SPF) of 30. SPF 30 means it can protect you 30 times better than if you didn't have it. Remember that even if you have sunscreen on, you can still get sunburnt. The best sun protection is still shade. Avoid the sun during 11am and 2pm where the sun is most intense.
How do you prevent sunspots?
Use sunscreen. SPF 30 (but you will not get tan)
Does it matter what kind of SPF sunscreen you wear?
It does. The higher the SPF, the higher UV protection it contains. Let's say you have a sunscreen with a 30 SPF and one with 60, the one with 60 offers more protection.
What does the number mean on the sunscreen bottle?
boring It means thats the SPF protection from the solar rays(for your skin)...always get 30+.... the higher the number, the better protection :)
What does the numbers on the sunscreen bottle mean?
boring It means thats the SPF protection from the solar rays(for your skin)...always get 30+.... the higher the number, the better protection :)
