Guar Hydroxypropyltrimonium Chloride is a quaternized, cationic derivative of guar gum used in skincare and haircare as a conditioning, antistatic, and viscosity-modifying agent. It deposits on negatively charged skin and hair surfaces to improve softness, manageability, and texture.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin or scalp irritation | Rare | Generally well tolerated; occasional irritation reported, often related to formulation rather than the ingredient itself. |
| Allergic contact dermatitis | Very rare | Isolated sensitization cases; not considered a common allergen. |
| Eye irritation | Rare | Possible transient stinging if rinse-off products enter the eyes. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.