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Functional / Support

Behentrimonium Methosulfate

Often labeled as: BTMS

The elite conditioning emulsifier.

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Overall Safety Safe
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Pregnancy Safety Safe
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Comedogenic (0-5) 0 / 5
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Irritancy (0-5) 0 / 5

๐Ÿ”ฌ How It Actually Works

Despite the scary-sounding name, this is not a harsh sulfate detergent. It is an exceptionally mild, cationic conditioning emulsifier derived from colza (rapeseed) oil. It creates incredibly luxurious, detangling lotions and hair masks.

๐Ÿ’– Why your skin loves it

Provides elite slip, deeply conditions the skin, and stabilizes heavy creams.

๐Ÿ’ก Pro Tip

The absolute gold-standard ingredient for solid conditioner bars and rich lotions.

โš–๏ธ Myth vs. Fact

The Myth

It is a harsh, stripping sulfate.

The Science

It is a "methosulfate" salt, which acts as a profound moisturizer and conditioner, exactly the opposite of a cleansing sulfate.