QUATERNIUM-14

About QUATERNIUM-14

A quaternary ammonium compound used to condition hair and fight microbes. It does the job well, but quats as a class can be sensitizing, and there are emerging concerns about antimicrobial resistance.

Detailed Analysis

Quaternium-14 (CAS 27479-28-3, PubChem CID 33917) is a quaternary ammonium salt functioning as a hair conditioner, antistatic agent, antimicrobial, and mild surfactant. Quaternary ammonium compounds (quats) deposit on negatively charged hair surfaces to provide detangling, softness, and reduced static. However, quats as a class are associated with skin and eye irritation at higher concentrations, potential sensitization, and there are growing regulatory concerns about quat-induced antimicrobial resistance and environmental persistence. No GHS hazards listed for this specific compound; no EU restrictions. Moderate safety rating reflects the class-wide concerns.

What It Does

Skin Benefits

• ✓ Hair conditioning — detangling and softening
• ✓ Anti-static properties
• ✓ Antimicrobial activity — preserves formulations and may benefit scalp health

Known Concerns

• ⚠ Contact sensitization potential — quats are a recognized allergen class
• ⚠ Antimicrobial resistance concerns with quaternary ammonium compounds as a class
• ⚠ Environmental persistence and aquatic toxicity concerns for quat compounds generally

References