Cetrimonium Chloride is a quaternary ammonium compound used primarily as a conditioning, antistatic, and emulsifying agent in hair and skin care products, where it also provides mild preservative and surfactant properties. It helps reduce static, improve detangling, and stabilize formulations.
| Reported effect | How often | Notes |
|---|---|---|
| Skin irritation | Uncommon | Possible at higher concentrations; generally considered safe in rinse-off and low-concentration leave-on products. |
| Eye irritation | Uncommon | Can cause irritation on direct ocular contact, relevant in shampoos and rinse-off products. |
| Allergic contact dermatitis | Rare | Sensitization to quaternary ammonium compounds has been reported but is infrequent. |
| Mucous membrane irritation | Rare | Reported with concentrated exposure; diluted cosmetic use is typically well tolerated. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.