Rheum Palmatum (Chinese rhubarb) root extract is a plant-derived ingredient rich in anthraquinones and polyphenols, used in skincare for its antioxidant, anti-inflammatory, and antimicrobial properties. It is also studied for skin-brightening and protective effects against environmental stressors.
| Reported effect | How often | Notes |
|---|---|---|
Contact irritation (redness, stinging) | Uncommon | More likely at higher concentrations or on sensitive/compromised skin. |
Allergic contact dermatitis | Rare | Sensitization to plant anthraquinones or other constituents has been reported. |
Temporary skin staining/discoloration | Rare | Naturally pigmented anthraquinone compounds may leave transient yellowish tint. |
Photosensitivity | Very rare | Anthraquinones theoretically may increase light sensitivity; clinical reports are limited. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.