Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

METHYL TRIMETHICONE.

Valuable CAS 17928-28-8 / HAIR CONDITIONING, SKIN CONDITIONING, SOLVENT

Methyl Trimethicone is a lightweight, non-greasy silicone polymer that functions as an emollient and conditioning agent. It imparts a smooth, silky texture to formulations while forming a breathable protective barrier on the skin, enhancing hydration and reducing moisture loss.

Summary

Emollient Solvent Conditioning Agent Film Former Emulsifier Carrier

Science

Mechanism of Action

Functioning as a volatile silicone, Methyl Trimethicone forms a superficial, non-occlusive film upon evaporation, effectively reducing transepidermal water loss and promoting a smoother skin feel. It acts as a solvent and dispersing agent, particularly beneficial in pigmented formulations by facilitating rapid drying and uniform film formation. Furthermore, its carrier properties may enhance the absorption and delivery of other active ingredients into the skin. It also contributes to formulation aesthetics as an emulsifier and texture enhancer.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

As a liquid silicone, Methyl Trimethicone is not typically associated with dusting. However, the Cosmetic Ingredient Review (CIR) Expert Panel noted insufficient data to determine its safety when incidentally inhaled, such as during airbrush device application.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Methyl Trimethicone is described as having a neutral pH and exhibits excellent volatility and spreadability. While specific pH stability data for Methyl Trimethicone itself was not found, related silicones like Phenyl Trimethicone demonstrate remarkable stability across a broad pH range of 3 to 10.

Synergies

  • Potentially enhances absorption and delivery of other active ingredients as a carrier.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
85%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Methyl Trimethicone, as part of the broader class of dimethicone, methicone, and substituted-methicone polymers, is safe for use in cosmetics in current practices and concentrations, provided formulations are non-irritating. The maximum reported concentration for dermal contact for this broader class reached 85% in 2019. Data remain insufficient to determine safety for incidental inhalation, particularly when applied via airbrush devices.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Methyl Trimethicone is a valuable ingredient, contributing significantly to product aesthetics and performance by providing a smooth, non-greasy feel, forming a protective barrier, and enhancing ingredient delivery, all with a favorable safety and skin compatibility profile.

Related

Similar Ingredients

Finding similar ingredients…