Peter Thomas Roth
Potent-C™ Niacinamide Discoloration Treatment
A niacinamide treatment with vitamin C that helps brighten the look of discoloration and dark spots.
This lightweight gel-cream is made with a 15% brightening complex that includes niacinamide, tranexamic acid, kojic acid, alpha arbutin, and pentapeptide. It is described for normal, dry, combination, and oily skin, with continued use aimed at improving the look of uneven tone and post-acne marks.
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- All 42 ingredients with roles & concentrations
- 6 clinical claims reviewed
- Source attribution: brand-claimed vs. ingredient-derived vs. editor-curated — plus a verdict tailored to your skin