Cas 67762-27-0, 8005-44-5, 81646-13-1

INCI: Behentrimonium methosulfate, cetearyl alcohol

Sustainability: BTMS-25 (25% of the active ingredient) is a natural conditioning emulsifier derived from Colza oil. A renewable resource. This makes it more eco-friendly than synthetic ingredients derived from non-renewable petroleum sources. It can be used to emulsify lotions and scrubs but is more commonly used to make hair conditioners. -1,2

A quaternary ammonium salt of behentrimonium alcohol is a type of alcohol found in oils like rapeseed. It is known for making creams that leave skin and hair silky and soft. Cationic conditioners, such as BTMS, are substances made up of molecules enveloped by a positive charge.

Usage rate: there are a few factors to consider. Firstly, the usage rate of BTMS-25 is often more than what is required to emulsify due to its conditioning properties. This could lead to overuse and waste. Additionally, BTMS-25 is more expensive than most non-cationic emulsifying waxes, which could impact the economic sustainability of products that use it. (3)

On the positive side, BTMS-25 is likely to be biodegradable due to its natural origin, meaning microorganisms in the environment can break it down, reducing potential environmental harm compared to non-biodegradable ingredients (4)

The manufacturing process involves the reaction of Behenic Acid, a type of fatty acid found in some plants and animals, with other ingredients to form the final product3. 5

Increased demand: Global BTMS market size was $157 million in 2021 and is projected to reach $417 million by 2031. This growth could potentially increase the demand for colza oil, which would benefit that industry. (6) 


1 .

2 Oh, The Things We'll Make! - Oh, The Things We'll Make! (

3 BTMS-25 - Humblebee & Me (

4 Is BTMS 50 Vegan? A Guide to Safe and Natural Ingredients -

5  BTMS 25 (