Quaternium-33 ●
TL;DR. A cationic conditioning and antistatic agent, mainly used in hair care to reduce flyaway, improve combing, and leave a smoother feel on the fiber.
What does Quaternium-33 do in a cosmetic formula?
A cationic conditioning and antistatic agent, mainly used in hair care to reduce flyaway, improve combing, and leave a smoother feel on the fiber.
Is Quaternium-33 clean?
From a clean-beauty perspective, it has friction because it is a synthetic quaternary ammonium material with potential for eye or skin irritation at higher exposure. It is also less commonly accepted than simpler plant-derived conditioning agents in stricter clean frameworks.
Is Quaternium-33 sustainable?
This material is typically synthetic and petrochemical-linked, with limited renewable-feedstock alignment. Quaternary cationic surfactants can bind strongly to sediments and sludge, so environmental screening focuses on biodegradation and aquatic impact rather than only rinse-off dilution.
Is Quaternium-33 COSMOS-approved?
It is not permitted under COSMOS-organic or COSMOS-natural standards as a conventional quaternary ammonium conditioning agent. Its fit with Green Chemistry is weak because it relies on synthetic cationic chemistry and does not clearly meet the preferred profile for renewable sourcing and ready biodegradability.
How does Quaternium-33 work chemically?
This compound is a permanently charged quaternary ammonium material, so it adsorbs well to the negatively charged surface of hair and provides conditioning even after rinsing. It is generally most compatible with nonionic, amphoteric, or carefully balanced systems, while strong anionic surfactants can reduce deposition or form complexes.
Last updated 2026-05-14