In a well-known absorption study, pure vitamin C increased skin vitamin C levels when formulated correctly, but derivatives like MAP did not in that experiment
Contains glutathione precursors to support natural antioxidant production
Selhub J, Jacques PF, Bostom AG, D'Agostino RB, Wilson PWF, Belanger AJ, O'Leary DH, Wolf PA, Schaefer EJ, and Rosenberg IH (1995)
doi:10.1152/ajpendo.00201.2006 (source) Ionescu M, Frohman LA
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The film melts in your mouth and delivers glutathione through the oral mucosa, making it a convenient choice if you prefer not to take capsules or want a quick daily routine upgrade