Product Name:Behentrimonium Methosulfate
Synonyms: BTMS 25,BTMS 50,BTMS 85
CAS No.: 81646-13-1
MF: C26H57NO4S
EINECS: 279-791-1
Purity:25%, 50%, 80%
Appearance: White flake or powder
BTMS 25, BTMS 50, BTMS 85, Behentrimonium Methosulfate serves as an antistatic agent, antibacterial agent, hair conditioner, and surfactant in cosmetics.

BTMS 25 is a key ingredient in hair and skin care formulations. This mild, plant-derived cationic surfactant primarily acts as a conditioner and detangler.
In hair care, the ingredient delivers immediate and noticeable benefits. It carries a positive charge, which actively attracts to negatively charged hair strands, especially those that are damaged or wet. This action forms a thin, uniform coating on the hair’s surface. As a result, it instantly smooths the hair cuticle, significantly reduces friction, and eliminates tangles. You experience softer, shinier, and more manageable hair with far easier combing, both wet and dry. Moreover, its conditioning effect helps seal in moisture, improving hair texture and reducing static flyaways.
For skin care, particularly in rinse-off products, BTMS 25 provides a distinct silky-smooth afterfeel. It leaves skin feeling exceptionally soft and lubricated without any heavy greasy residue.
A major advantage of this ingredient is its gentle nature. Derived from colza oil (rapeseed oil), it is considered milder and less irritating than many other quaternary ammonium compounds. Furthermore, it is biodegradable and compatible with a wide range of other cosmetic ingredients.
Therefore, you will commonly find BTMS 25, BTMS 50, BTMS 85 in high-performance conditioners, hair masks, leave-in treatments, and creamy body washes. Its effective conditioning, coupled with its mild and plant-based profile, makes it a versatile and popular choice for enhancing sensory appeal and functionality in personal care products.
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