Behentrimonium Methosulphate is the alternative spelling of the quaternary ammonium conditioning emulsifier methosulfate. It improves combability, adds softness, reduces static, and supports emulsion stability, with generally good tolerability.
Smooths hair for easier combing and adds softness to skin.
Category
Skin Conditioning, Emulsifying
Type
Emulsifier
Ratings
Overall Rating
Good
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Behentrimonium Methosulphate a Good Ingredient?
It improves combability and softness and tends to be milder than some other conditioning quats, which is enough for a Good rating. Note that this is just an alternate spelling of the same ingredient, not a different one.
What it does
Skin Benefits
Promotes a sleek finish and smoother styling with a lightweight afterfeel, leaving hair looking more polished from root to tip.
Where you'll find it
Uses in Skincare & Cosmetics
Turns up in leave-in sprays, milky lotions, hair milks, and styling creams.
Before you use it
Safety
May cause irritation for some, especially on sensitive scalps or with leave-on use. Avoid eye contact, and patch test first if you're prone to reactions.