Acetyl Glutamine is an acetylated form of the amino acid glutamine used in skincare as a humectant and conditioning agent. It helps support skin hydration and the skin barrier, and is generally considered a mild, well-tolerated ingredient.
| Reported effect | How often | Notes |
|---|---|---|
Mild transient irritation or redness | Rare | Possible in sensitive individuals, usually mild and temporary |
Contact allergy / sensitization | Very rare | Uncommon for amino acid derivatives; isolated reports only |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.