Products are split into three levels based on ingredient labels
OatHOLOGY
Last verified: March 2, 2026
Retin a for face
RetinOath Serum by OatHOLOGY 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.
