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Does a Higher SPF Mean More Protection?


CSI Locations:
Olney, MD Location
18111 Prince Phillip Drive
Suite 120
Olney, MD 20832
(301)570-0030
 
Washington, DC Location
4400 MacArthur Blvd NW
Suite 102A
Washington D.C., 20007
(202)965-7546

 

Does a Higher SPF Mean More Protection?

 
It is logical for someone to think that an SPF of 30 is twice as good as an SPF of 15 and so on. But that is not exactly how it works.
 
The increase in higher protection between an SPF 15 and an SPF 45 is only about four percent.
 
This increase in protection does not make up for the increased amount of chemicals that higher sunscreens have. Our Medical Aesthetician recommends that you use a good physical block (titanium dioxide and zinc oxide) which reflects the rays.
 
For example, an SPF 15 sunscreen blocks 93 percent of UVB (ultraviolet B shortwave rays)–the chief cause of skin reddening and sunburn. Meanwhile, an SPF 30 sunscreen blocks nearly 97 percent.
 
But, the advantage of sunscreens above SPF 50, which blocks about 98 percent of UVB rays is questionable.

 
 

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    Cosmetic Skin Institute

    CSI Olney
    18111 Prince Philip Drive Suite 120
    Olney, MD 20832
    Phone: (301)570-0030

    CSI DC
    4400 MacArthur Blvd NW Suite 102A
    Washington, DC 20007
    Phone: (202)965-7546

    Jessica Lee
    (510)754-4951

    Judy Silvero
    (301)213-6131
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