Yes, research has shown that vitamin C works well and can be used with other beneficial ingredients including niacinamide, retinol, peptides (except copper peptides, which Paulas Choice does not use) and exfoliating acids
"Stable Gastric Pentadecapeptide BPC 157, Robert's Stomach Cytoprotection/Adaptive Cytoprotection/Organoprotection, and Selye's Stress Coping Response." Gut , 2019
A comprehensive treatment strategy that also includes dietary modifications, the use of additional drugs, and the use of nutritional supplements may only include a tiny fraction of this medication
As an antioxidant, riboflavin has the potential to reduce oxidative stress in your body, including your eyes ( In particular, scientists are studying riboflavins potential to prevent cataracts, as prolonged riboflavin deficiency may lead to this condition
L-Glutathione is involved in detoxification of the liver and has been used for its antioxidant properties