Products are split into three levels based on ingredient labels
numbuzin
Last verified: March 26, 2026
5+ Glutathione Vitamin Concentrated Serum by numbuzin has been evaluated by Million Marker and contains some ingredients with possible health concerns. This product is rated SLOW, indicating moderate concern.
We recommend reviewing the ingredient list carefully and considering safer alternatives when possible. SLOW-rated products may still be acceptable for occasional use.
