While very useful and informative, this article does not mention recent science that suggests high energy visible (HEV) light - the wavelength region the eye associates with the colors violet and blue - contributes significantly to skin damage. Nearly one-half of the free radicals created in the skin by sunlight exposure are due to the HEV region of wavelengths. The recent science is consistent with the fact that melanin is either brown, yellow or red - each type selectively filtering violet and blue light. If UV were the only issue in photoprotection, melanin would be colorless.
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While very useful and informative, this article does not mention recent science that suggests high energy visible (HEV) light - the wavelength region the eye associates with the colors violet and blue - contributes significantly to skin damage. Nearly one-half of the free radicals created in the skin by sunlight exposure are due to the HEV region of wavelengths. The recent science is consistent with the fact that melanin is either brown, yellow or red - each type selectively filtering violet and blue light. If UV were the only issue in photoprotection, melanin would be colorless.
July 7, 2010 - 7:55pmThis Comment
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