Behentrimonium methosulfate paired with cetearyl alcohol is a cationic conditioning emulsifier system commonly used in creams and hair care. It's chosen for reliable emulsion stability, strong slip for detangling, and a soft, velvety afterfeel.
A hair and skin conditioner that leaves both feeling smooth and soft.
Category
Emulsifying, Skin Conditioning, Barrier Support
Type
Emulsifier
Ratings
Overall Rating
Good
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Behentrimonium Methosulfate and Cetearyl Alcohol a Good Ingredient?
This cationic emulsifier and fatty alcohol pair reliably stabilizes creams and delivers proven slip and conditioning with low irritation for most users, without the buildup issues that come with some stronger quats. That consistency earns it a Good rating.
What it does
Skin Benefits
Helps hair feel smoother and easier to comb, and leaves skin touchably soft. The finish is plush and conditioned without feeling heavy.
Where you'll find it
Uses in Skincare & Cosmetics
Frequently included in rinse-out conditioners, leave-in treatments, body lotions, and rich facial creams for a conditioned feel.
Before you use it
Safety
Generally well tolerated in both rinse-off and leave-on products. Mild eye or skin irritation can occur at higher concentrations or on very sensitive skin. Avoid direct eye contact and stop use if irritation persists.
Products with Behentrimonium Methosulfate and Cetearyl Alcohol