Pinene is a naturally occurring monoterpene found in pine, rosemary, and many essential oils, used in skincare primarily as a fragrance component and for its aromatic properties. It has reported antimicrobial and anti-inflammatory activity in laboratory studies but is not a proven topical therapeutic active.
| Reported effect | How often | Notes |
|---|---|---|
| Allergic contact dermatitis | Uncommon | Terpenes can sensitize, especially when oxidized through air exposure. |
| Skin irritation | Uncommon | May cause redness or stinging, particularly on sensitive or compromised skin. |
| Photosensitivity | Rare | Possible increased sun sensitivity reported with some terpene-containing oils. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.