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ubiquinone

Also known as coenzyme Q10, it is a vitamin-like, fat-soluble substance naturally present in the body. Applied to skin, it can have antioxidant benefits due to its energizing effect on factors in skin that tend to slow down with age and cumulative sun exposure. 

References for this information:
Biofactors, November-December 2015, pages 383-390; Volume 32, 2008, pages 245-255; and Volume 25, 2005, pages 179-185

See coenzyme Q10

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