Behentrimonium Methosulfate
Part of our Ingredient Glossary — educational information about raw materials we may use in our products. We don't sell raw ingredients.
The name sounds like a chemistry experiment gone wrong, but Behentrimonium Methosulfate is actually one of the gentlest conditioning agents available. This plant-derived compound comes from rapeseed oil and represents a major improvement over the harsh quaternary ammonium compounds that dominated hair care for decades.
What makes this ingredient special is its molecular structure. Hair damage creates negative charges along the hair shaft, which causes strands to repel each other and create tangles. Behentrimonium Methosulfate carries a positive charge that naturally attracts to these damaged areas, smoothing the hair cuticle and eliminating static. Unlike its harsher cousins, it rinses clean and won't build up over time.
We use this ingredient in our conditioning products because it delivers professional-salon results without the irritation. It detangles wet hair effortlessly, reduces breakage during combing, and leaves hair feeling soft rather than coated. The fatty alcohol component also provides slip, making it easier to work through knots without pulling or tearing delicate strands.
Despite the sulfate in its name, this ingredient is completely different from cleansing sulfates like SLS. It's a conditioning sulfate that actually protects and repairs rather than strips away natural oils. Your scalp gets the benefits of smooth, manageable hair without any of the irritation or dryness.
