Critical Wavelength®
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Education is the key 
                        to protection!

 What is Critical Wavelength® Anyway?

UVB protection is rated by an SPF value but provides no information about the level of UVA protection. The best way to know that one is recieving adequate UVA protection is to know the product's Critical Wavelength® value. 


The Critical Wavelength® value tells consumers how far out (starting at the beginning of the UVB range) a product's “protective umbrella” extends; or more precisely how far out 90% of the “umbrella” extends.  The FDA has defined “broad spectrum” as products with a Critical Wavelength® value of over 370nm.


In 2011, the FDA decided to use Critical Wavelength® to define whether a product is “broad spectrum.”  Only products with a Critical Wavelength® value over 370nm will now be allowed to make a broad spectrum claim.  This FDA action was a tremendous step forward not only in defining what a "broad spectrum" product is, but also by bringing attention to the need for proper UVA protection. 

Since 2007, the American Academy of Dermatology (AAD) has asked the FDA to required placement of an absolute Critical Wavelength value on sun protection products to help them select the best products for their patients with photosensitivities. In recent years, a broader picture has begun to emerge about the link between chronic UVA exposure and human health. UVA is the cause of solar aging and is strongly linked to development of melanoma.  Therefore, consumers should start looking for a product's Critical Wavelength® value as one factor to help them select the most appropriate product for any given occasion.

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