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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.

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14y ago

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What is the difference between UPF 50 and SPF 50 in terms of sun protection?

UPF 50 measures the protection against ultraviolet (UV) rays for clothing, while SPF 50 measures the protection against UV rays for sunscreen. UPF indicates the fabric's ability to block UV rays, while SPF indicates the sunscreen's ability to protect the skin.


Which sunblock best helps to prevent a sunburn?

The best sun block I not going out in the sun at all. But if you have to, use baby sun block. It's stupid, yes, but it has a higher SPF which means it blocks out more of the suns rays.


What is the recommended SPF level for a cotton shirt to protect against harmful UV rays?

The recommended SPF level for a cotton shirt to protect against harmful UV rays is at least SPF 30.


Does Beach Bum Tanning lotions have any SPF in them?

Currently Beach Bum Tanning Lotions do not contain SPF's. SPF's protect you skin from harmful rays.


Does the SPF count?

"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 is a good spf sunscreen for kids?

4, 15, and 30 are good Sun Protection Factors for kids as they contain no "Bad Ingredients". SPF 50+ should not be used on young children. SPF 100+ can not be used on children under 13.


What is the significance of the SPF number in sunscreen, and how does it relate to the sun protective factor of the sunscreen?

The SPF number in sunscreen indicates its level of protection against UVB rays, which cause sunburn. The higher the SPF number, the greater the protection. For example, SPF 30 blocks about 97 of UVB rays, while SPF 50 blocks about 98. This means that a higher SPF number offers more sun protection.


Does clothing have spf?

I guess it would protect you from some UV rays. There are also special swim shirts that have built in SPF.


What is the difference between UPF and SPF and how do they compare in terms of protecting against harmful UV rays?

UPF (Ultraviolet Protection Factor) measures the protection of clothing against UV rays, while SPF (Sun Protection Factor) measures the protection of sunscreen against UV rays. UPF indicates how much UV radiation can penetrate fabric, while SPF indicates how long sunscreen protects skin from UVB rays. UPF is more consistent and reliable in protecting against both UVA and UVB rays, while SPF only measures protection against UVB rays. It is important to use both UPF-rated clothing and SPF-rated sunscreen for comprehensive protection against harmful UV rays.


Why are there different SPF levels?

Different SPF levels indicate the level of protection a sunscreen offers against UVB rays. The number correlates to the amount of time you can stay in the sun without getting a sunburn. An SPF 30 blocks 97% of UVB rays, while an SPF 50 blocks 98%, providing higher protection but not proportionally higher.


What are the key differences between SPF and UPF ratings in sun protection clothing?

SPF ratings measure the effectiveness of sunscreen in protecting against UVB rays, while UPF ratings measure the effectiveness of clothing in blocking both UVA and UVB rays. SPF is for sunscreen, UPF is for clothing.


What is the minimum SPF for UV rays?

i would say that the least sppf you should use is an SPF of 5. it protects you skin, but not for a long amount of time.