The material selection platform
Cosmetics Ingredients
The material selection platform
Cosmetics Ingredients


CAS Number 17928-28-8
Chem/IUPAC Name: 1,1,1,3,5,5,5-Heptamethyl-3-(trimethylsilyloxy)trisiloxane
COSING REF No: 58116
Methyl Trimethicone is a commonly used silicone-based ingredient in cosmetics. It is a clear, odorless liquid with the chemical formula C10H30O3Si4. Methyl Trimethicone is primarily utilized as a lightweight, non-greasy emollient and conditioning agent in various skincare and hair care products. It imparts a smooth and silky texture to formulations, helping to improve spreadability and enhance product application. Despite being a silicone derivative, Methyl Trimethicone is considered non-comedogenic, meaning it has a low likelihood of clogging pores.


Methyl Trimethicone has diverse applications in both skincare and cosmetic products.
  • Skin care: It is often used as an emollient, providing a lightweight and non-greasy feel to moisturizers, creams, and lotions. It helps to enhance skin smoothness and hydration by forming a protective barrier on the skin's surface, reducing moisture loss
  • Cosmetic products: It serves multiple purposes. It is commonly utilized as a film-forming agent in foundations, primers, and concealers, creating a smooth and even surface for makeup application. Its lightweight texture contributes to a natural and comfortable makeup finish


Methyl Trimethicone is typically manufactured by performing a hydrolysis reaction between dimethyldichlorosilane and water. This reaction yields methyl trimethicone as well as hydrochloric acid as a byproduct. The resulting methyl trimethicone is subjected to purification processes before being utilized in the formulation of cosmetic products.

What does METHYL TRIMETHICONE do in a formulation?

  • Emollient
  • Film forming
  • Skin conditioning

Safety profile

Methyl Trimethicone has been thoroughly assessed for safety and is considered safe for use in cosmetics. Extensive evaluations and regulatory approvals have confirmed its suitability for cosmetic applications. When used as directed and within recommended concentrations, Methyl Trimethicone is generally well-tolerated and does not pose substantial risks to human health.

Technical profile

Property Values
Boiling Point 235.4±23.0°C
Melting Point -55 to -54°C
pH Neutral
Solubility Insoluble in water
Viscosity Low

Commercial Selection : Grades containing solely METHYL TRIMETHICONE

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