INCI name Behentrimonium Methosulfate
CAS number 81646-13-1 / 241148-21-0
Behentrimonium Methosulfate is a quaternary ammonium salt used in hair care products for its antistatic, conditioning, softening, and hydrating properties. It also enhances product texture. This positively charged, white to off-white solid is often compared to Behentrimonium Chloride, a canola-derived conditioner. The key difference is that Behentrimonium Methosulfate requires a stabilizing agent, whereas Behentrimonium Chloride does not.
Purpose
Behentrimonium Methosulfate acts as an antistatic agent by reducing static electricity, preventing flyaways and frizz. It serves as an effective hair conditioner, softening, smoothing, and detangling strands while enhancing manageability. In skincare, it functions as a mild conditioning agent, offering hydration and a silky feel.
Origin
Behentrimonium Methosulfate is a quaternary ammonium salt derived from rapeseed oil, a plant belonging to the Brassicaceae family. Known for its bright yellow flowers, rapeseed is widely cultivated for its oil-rich seeds, which serve as a natural source for this gentle conditioning agent used in hair and skincare products.
| Feature | Description |
|---|---|
| Name | Behentrimonium Methosulfate |
| Type | Cationic surfactant and conditioning agent |
| Source | Derived from rapeseed oil |
| PH | 5.0-7.0 (2% solution) |
| Solubility | Dispersible in water, soluble in oils and alcohols |
| Concentration | 1–10% |
| Melting Point | 50-60°C |
| Color | White to off-white |
| Odor | Mild or nearly odorless |
| Physical state | Solid |
Mild Yet Effective Conditioning
Behentrimonium Methosulfate is known for its gentle yet powerful conditioning properties. Unlike traditional quaternary ammonium compounds, which can be harsh and irritating, it provides deep hydration and softness without causing scalp sensitivity or product buildup. This makes it an excellent choice for individuals with sensitive skin, dry scalps, or fine hair that can easily become weighed down by heavier conditioning agents.
Superior Detangling & Softening
Its ability to smooth the hair cuticle helps reduce friction between hair strands, minimizing tangles and breakage. This results in hair that is not only easier to comb but also less prone to damage from brushing and styling. The conditioning effect helps to lock in moisture, leaving hair feeling silky, manageable, and free from frizz.
Lightweight & Non-Greasy Texture
One of the standout features of Behentrimonium Methosulfate is its ability to condition without adding excess weight or greasiness. Many conditioning agents leave behind a heavy residue that can make hair appear flat and oily, but this ingredient ensures a lightweight feel. It is particularly beneficial for fine or thin hair, as it provides softness and hydration without compromising volume.
Plant-Based Origin
Derived from rapeseed oil, Behentrimonium Methosulfate is a plant-based alternative to synthetic conditioning agents. Rapeseed belongs to the Brassicaceae family and is widely cultivated for its oil-rich seeds. The natural origin of this ingredient makes it a preferred choice in clean beauty formulations, offering a more sustainable and eco-conscious option for hair and skincare products.
Requires a Stabilizing Agent
A key distinction between Behentrimonium Methosulfate and similar conditioning agents, such as Behentrimonium Chloride, is that it requires a stabilizing agent in formulations. This influences how it is incorporated into cosmetic products and affects its compatibility with other ingredients. Proper formulation techniques are necessary to maintain the stability and effectiveness of the final product.
Skin-Friendly & Non-Irritating
Unlike some conditioning agents that can cause irritation, Behentrimonium Methosulfate is well-tolerated by most skin types. It provides mild hydration and a silky afterfeel in lotions, creams, and other personal care products. Its gentle nature makes it an excellent choice for products designed for sensitive skin or those prone to irritation.
Enhances Product Texture & Spreadability
In addition to its conditioning effects, Behentrimonium Methosulfate plays a vital role in improving the overall texture of hair and skincare formulations. It enhances the spreadability of creams and conditioners, ensuring smooth and even application. This contributes to a more luxurious feel, making products more enjoyable to use while improving their effectiveness.
Applications of Behentrimonium Methosulfate
Hair Conditioners and Treatments
Behentrimonium Methosulfate is widely used in rinse-off and leave-in conditioners, deep conditioning treatments, and hair masks. Its superior detangling and softening properties make hair more manageable, reduce frizz, and enhance smoothness. It is particularly effective in curly and textured hair products, as it helps define curls while minimizing breakage.
Shampoos and Co-Washes
In sulfate-free and mild shampoos, it acts as a conditioning agent that prevents hair from feeling stripped or dry. It is also a key ingredient in co-washing (conditioning wash) products, where it provides cleansing while maintaining moisture balance in the hair.
Hair Styling Products
Due to its lightweight conditioning properties, Behentrimonium Methosulfate is used in styling creams, mousses, and serums. It helps reduce static, tame flyaways, and improve the overall texture of styling products, making them easier to apply without leaving a greasy residue.
Skin Care Products
Its mild conditioning effects make it suitable for lotions, creams, and body butters. It enhances spreadability and absorption, leaving the skin feeling soft and hydrated without a greasy finish. It is commonly found in formulations designed for sensitive or dry skin, as it also provides long-lasting moisture without irritation.
Baby Care Products
Because of its gentle nature, Behentrimonium Methosulfate is used in baby shampoos, conditioners, and lotions. It provides softness and hydration while being mild enough for delicate skin and hair.
Beard Conditioners and Grooming Products
It is often included in beard conditioners, balms, and grooming creams to soften coarse facial hair,thus making it easier to manage and style. It also helps prevent irritation and dryness in the underlying skin.
