Behentrimonium Methosulfate sounds like a scary ingredient when you turn your favorite bottle of conditioner around and start reading. When transitioning to natural hair, one of the first things you learn is the importance of ingredients in natural hair products.
The general rule of thumb used to be – if you can’t pronounce it, don’t use it in your hair. Well, my friend, I’m here to tell you not all hard to pronounce ingredients are made the same and this is one of them. In this article, we are going to break down the mystery behind this ingredient and why it might be your new best friend along your natural hair journey.

WHAT IS BEHENTRIMONIUM METHOSULFATE? WHAT IS IT MADE OF?
The scientific definition of Behentrimonium Methosulfate, also known as BMS, is a quaternary ammonium compound synthetically derived from the oil that comes from rapeseed. Used in conditioners, shampoos, and lotions it also aids in providing extra slip in these products. For women with lots of curls, like me, this is the most important!
BMS is also an emulsifier. What does that mean exactly? An emulsifier helps to bind together a product that has water and oil in order to make it into a cream. Since of course, we know oil and water do not mix – enter BMS.

IS BEHENTRIMONIUM METHOSULFATE BAD FOR MY HAIR?
So the word “sulfate” has you concerned? Trust me I understand. Since the adoption of the Curly Girl Method, many naturals began to run far away from any type of sulfate to avoid the risk of damaging their curls.
But, one thing you have to understand is that not all sulfates are created equal. BMS is plant-derived so many have said it is not a cause for concern in natural hair products. It does not cause build-up and is said to be non-irritating.