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it wont hurt you, it is just lotion with a chemical which absorbs and converts UV light into less harmful forms of radiation... at night the UV aspect of the lotion is not in use.. obviously, because the sun is elsewhere......

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Q: Is it okay to wear SPF 15 at night?
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Does burts bees lip balm with pomegranate oil have spf?

Yes 15 Spf Just to let you know never wear lip gloss as sun protection your lips will be fried and blistered


How much SPF is in Neutrogena Lip Moisturizer?

It has an SPF of 15 (I know because I have it)


What is not an effective way way to prevent heat stress and stroke?

wearing sunscreen Wear a loose-fitting hat


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"The Sun Protection Factor (SPF) displayed on the sunscreen label ranges from 2 to as high as 50 and refers to the product's ability to screen or block out the sun's harmful rays. For example, if you use a sunscreen with an SPF 15, you can be in the sun 15 times longer that you can without sunscreen before burning. Consumers need to be aware that SPF protection does not increase proportionally with an increased SPF number. While an SPF of 2 will absorb 50% of ultraviolet radiation, an SPF of 15 absorbs 93% and an SPF of 34 absorbs 97%." from http://www.melanomafoundation.org/prevention/facts.htm


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.


Will you get a good tan if you use spf 45 for 2 days and spf 30 for 2 days and spf 15 for the remainder while on Caribbean vacation and you have fair skin?

How long is the vacation? You are still apt to burn with fair skin if you are using SPF 15 for 7-10 days longer.


All varieties except original jar and tube Carmex have SPF 15?

Yes, that is correct. Only the original jar and tube Carmex products do not contain SPF 15. Other varieties of Carmex, such as flavored or tinted lip balms, do contain SPF 15 for added sun protection.


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You have only SPF 15 at home could you just apply it three times so that it is equal to SPF 45?

No it doesn't add up. It is still 15 no matter how much you apply it.


What spf sunscreen is best to uses to exercise outside?

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What SPF sunscreen you should use to exercise outside?

If you are exercising, it would be best to use a sunscreen with an SPF of at least 30 and reapply at least every two hours or after sweating.