A substance derived from animals or various types of mushrooms that has potent antioxidant and skin-soothing properties.
References for this information:
Journal of Cosmetic Dermatology, September 2007, pages 183–188
Biomedicine and Pharmacotherapy, September 2006, pages 453–457
Biochemical and Biophysical Research Communications, March 2003, pages 860-864
Food and Chemical Toxicology, November 1999, pages 1043–1053
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