Paullinia Cupana (guarana) seed extract is a botanical rich in caffeine, tannins, and polyphenols used in skincare for its antioxidant and stimulating properties, often marketed for reducing puffiness, improving microcirculation, and supporting anti-cellulite or firming formulations. Its caffeine content makes it a topical vasoconstrictor and free-radical scavenger.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation or redness | Uncommon | Possible with high concentrations or sensitive skin, partly due to tannin content. |
Allergic contact dermatitis | Rare | Sensitization to botanical components is possible but infrequently reported. |
Dryness or tightness | Rare | Astringent tannins may cause a drying sensation in some users. |
Stinging on application near eyes or broken skin | Rare | Transient and related to caffeine/polyphenol content. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.