06/13/2017
Enjoy Your Summer And Protect Your Skin!
UVA and UVB Rays
We should use sunscreen or sunblock that blocks both UVA and UVB rays. According to the Skin Cancer Foundation, here are the main differences between them.
UVA is the dominant tanning ray, whether outdoors or in a tanning bed. UVA rays pe*****te the skin deeper than UVB rays and can also pe*****te clothing and glass, causing cumulative skin damage over time. Studies over the past two decades show that UVA damages keratinocytes, skin cells located in the basal layer of the epidermis.
UVB rays are the main cause of skin reddening and sunburns. They tend to damage the skin's more superficial epidermal layers. UVB rays do not significantly pe*****te glass.
In summary, exposure to UVA rays is the major cause of skin aging, wrinkling and tanning, while UVB rays are the main cause of sunburns. However, both types of rays play a role in the development of skin cancers including melanoma, basal cell cancer and squamous cell cancer.
SPF
Sun Protection Factor (SPF) provided by sunscreens and sunblocks is the number on a scale ranging from 2 to 100 for rating the degree of protection to screen or block out the sun’s burning rays. However, it only measures UVB rays, not UVA rays.
The higher the SPF, the better…right? This is not necessarily true. Just because a product has an SPF of 100 does not mean it is going to protect your skin more. It is not necessary to use anything higher than an SPF 50. According to the American Melanoma Foundation, “If you use a sunscreen with an SPF 15, you can be in the sun 15 times longer than you can without sunscreen before burning. However, 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, and SPF of 15 absorbs 93% and an SPF of 30 absorbs 97%.”
Consider your choices.....choose wisely! Msg me I can help!
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