Wednesday, September 26, 2007

Is tanning ever good for you? (Acne)

Narrow band blue light (420 nm) has anti-inflammatory effects on acne. It is less useful for comedonal acne, where inflammation is less prevalent. The light attacks the heme metabolism mechanism of Propionibacterium acnes, therefore killing the bacteria. This study showed the antinflammatory effects of the blue light also. There was reduced staining of IL-1alpha and ICAM-1, both indicators of an inflammatory response. And with the addition of low-dose narrow band-UVB (312 nm), the results were even better.

Shnitkind E, Yaping E, Geen S, Shalita AR, Lee WL. Anti-inflammatory properties of narrow-band blue light. J Drugs Dermatol. 2006 Jul-Aug;5(7):605-10.

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