Emulsifying Wax BTMS

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BTMS emulsifying wax

INCI: Cetearyl Alcohol and Behentrimonium Methosulfate

CAS No:81646-13-1 / 241148-21-0
EINECS Nª:279-791-1

Uses: Conditioning and coemulsifying agent.
Appearance 25º C: white to slightly yellow granules. The pH determination will be a milky dispersion at 35ºC
Color to Gardner Max. 1.0
pH-Value 1 %: Min. 6.0 Max.8.0
Quaternary:Min.24.0% - Max.26.0%

In the world of natural and sustainable cosmetics, BTMS has earned a name as a fundamental ingredient to develop products that care for skin and hair, giving them softness and manageability. This article will resolve all your doubts and curiosities about BTMS, allowing you to fully understand its properties and benefits.

What is BTMS?

BTMS, whose technical name is Behentrimonium Methosulfate, is a cationic emulsifying and conditioning compound, derived from rapeseed, used primarily in hair care products such as conditioners and styling creams. Although it is predominantly recognized for its hair benefits, it is also used in creams, lotions and makeup, thanks to its softening and anti-static properties.

Production and Cosmetic Use of BTMS

BTMS is produced by combining cetearyl alcohol with behentrimonium methosulfate. This compound is ideal for the creation of cosmetic products since it acts as an efficient emulsifier, allows the creation of oil-in-water emulsions, stabilizes formulations and provides conditioning properties.

Properties of BTMS in Natural Cosmetics


- For the skin

Moisturizing and Softening: BTMS leaves the skin soft, smooth and nourished, improving elasticity and hydration.
Ideal for Sensitive Skin: By reducing the pH of the preparations, BTMS minimizes irritation and is suitable for all skin types.

- For the hair

Detangler and Conditioner: Facilitates dry and wet styling, leaving hair soft and manageable.
Shine and Strength: Nourishes and strengthens hair, keeping it shiny and healthy.
Reduction of Static Effect: By having affinity with hair keratin, it reduces the static effect observed when brushing.


Benefits of BTMS according to Skin and Hair Types


- Types of Skin and its Benefits

Dry Skin: Intensive hydration and restoration of the skin barrier.
Oily Skin: Regulates sebum production without clogging pores.
Sensitive Skin: Soothes irritations and reduces redness.

- Hair Types and Their Benefits

Curly and Frizzy Hair: Defines curls and reduces frizz.
Long Hair: Prevents split ends and makes detangling easier.
Dyed Hair: Protects color and adds shine.


Creation of Products with BTMS and Recommended Dosages

With BTMS you can make a variety of products such as shampoos, conditioners, serums, masks and shower gels. The recommended dosage varies between 2-10% depending on the desired consistency.

- Combinations and Alternatives to BTMS
BTMS can be combined with other emulsifiers and surfactants such as beeswax, lecithin and olivem emulsifying wax. Each brings unique characteristics and additional benefits to the formulations.

Frequent questions


- Is BTMS safe for the skin?

Yes, BTMS is safe and suitable for all skin types, even the most sensitive.


- Where can BTMS be found in personal care products?

You can find BTMS in products such as conditioners, shampoos, creams and lotions available at La Despensa del Sobón.


- Are there natural alternatives to BTMS?

Yes, there are natural alternatives such as plant-derived emulsifiers and natural waxes, but BTMS offers unique conditioning and emulsifying properties that are difficult to replicate.



BTMS is a versatile and effective ingredient in the world of natural cosmetics. Its ability to soften, condition and detangle makes it indispensable in hair and skin care products. Find out more about how to incorporate BTMS into your cosmetic creations and explore the recipes on our La Despensa del Jabón blog.


More information about our Product

To purchase quality BTMS and start enjoying its benefits, visit our website. Our BTMS emulsifying wax meets RSPO standards for sustainable palm oil production, is suitable for vegans and has an RSPO certification number: Kür'U-V-14-1 JObJ.

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