This botanical extract comes from the root of Cyperus rotundus, also called nutgrass. Tone-targeting and antioxidant-support formulas use it to improve the look of unevenness, though current human evidence is modest and outcomes vary.
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Cyperus Rotundus Root Extract a Good Ingredient?
Fair rating: early data suggest tone-evening and antioxidant support, but strong human evidence remains modest. Risk: as a botanical, it may still irritate sensitive skin despite generally low reactivity.
What it does
Skin Benefits
Helps diminish the look of blotchiness and dark spots while offering antioxidant support; human data are still modest. Can contribute to a more radiant, even-looking complexion over time.
Where you'll find it
Uses in Skincare & Cosmetics
Often included in brightening serums, spot correctors, and daily moisturizers aimed at tone refinement.
Before you use it
Safety
Generally considered low irritancy, but plant extracts can trigger sensitivity in reactive skin. Patch test if prone to redness or easily irritated skin and discontinue if discomfort occurs.