Behentrimonium Methosulfate and Cetearyl Alcohol

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.
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Ingredient Snapshot

Overview
A hair and skin conditioner that leaves both feeling smooth and soft.
Category
Emulsifying, Skin Conditioning, Barrier Support
Type
Emulsifier

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Helps hair feel smoother and easier to comb, and leaves skin touchably soft. The finish is plush and conditioned without feeling heavy.

Uses In Skincare & Cosmetics

Frequently included in rinse-out conditioners, leave-in treatments, body lotions, and rich facial creams for a conditioned feel.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

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.

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.