"Nano Extract" is not a recognized standardized cosmetic ingredient or INCI name; it is typically a marketing label referring to plant or other extracts processed into nanoscale particles or carriers (e.g., nanoemulsions, liposomes). Because composition varies by product, its function and safety profile depend entirely on the specific extract and nanoformulation used.
| Reported effect | How often | Notes |
|---|---|---|
| Contact irritation or stinging | Uncommon | Depends on the underlying extract and concentration; nanoscale delivery may increase penetration and irritation potential. |
| Allergic contact dermatitis | Uncommon | Botanical extracts are a known source of sensitization; risk varies with the specific plant material. |
| Increased skin penetration of constituents | Rare | Nanocarriers can enhance dermal absorption, a theoretical safety consideration noted in research rather than a confirmed common adverse event. |
| Photosensitivity | Rare | Possible with certain plant extracts (e.g., citrus, furocoumarin-containing botanicals). |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.