Zn PCA (zinc PCA) is the zinc salt of pyrrolidone carboxylic acid, used in skincare to help control excess sebum production and provide mild antimicrobial and soothing effects. It is commonly included in formulations targeting oily or acne-prone skin.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation or redness | Uncommon | Typically transient and concentration-dependent. |
Allergic contact dermatitis | Rare | Sensitization to the zinc or PCA component is infrequently reported. |
Dryness or tightness | Uncommon | May occur with overuse or in higher-strength sebum-control products. |
Stinging upon application | Rare | More likely on compromised or sensitive skin. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.