Alpha-lipoic acid is a fat- and water-soluble antioxidant used in topical skincare for its free-radical scavenging and potential anti-aging effects, sometimes promoted for improving skin texture and reducing fine lines. It also has mild exfoliating and anti-inflammatory properties.
| Reported effect | How often | Notes |
|---|---|---|
Transient stinging or tingling | Common | Often noticed shortly after application, particularly at higher concentrations. |
Skin redness or irritation | Uncommon | More likely with sensitive skin or compromised skin barrier. |
Contact dermatitis | Rare | Allergic or irritant reactions reported in isolated cases. |
Burning or itching | Rare | Usually subsides with discontinuation or reduced frequency of use. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.