Silica Silylate is a surface-modified silica cosmetic ingredient used in cosmetic and personal-care formulations for viscosity modification, emulsion stabilization, anticaking, antifoaming, bulking and skin-conditioning functions. COSMILE Europe describes it as silica modified with trimethylsilane and classifies it among thickening/consistency-regulating and stabilizing cosmetic ingredients.
Silica Silylate is generally produced by modifying the surface of silica so that part of the silica surface becomes more hydrophobic. This surface modification changes how the particles interact with oils, water and other formulation components. The resulting material is particularly useful in formulations where oil-phase structuring, absorption, suspension and texture control are required.
Commercial Silica Silylate is commonly supplied as a fine white powder. Its exact particle size, surface area, surface-treatment level, bulk density and rheological performance depend on the specific grade.
Silica Silylate is a hydrophobically surface-modified silica. Surface modification gives the silica different interfacial properties compared with untreated silica.
It can provide:
COSMILE Europe recognizes anticaking, antifoaming, bulking, emulsion stabilising, skin conditioning and viscosity controlling as functions of Silica Silylate.
A commonly referenced CAS number for Silica Silylate is:
CAS No.: 68909-20-6
However, silica silylate materials can have more than one identifier depending on material characteristics and regulatory/nanomaterial classification. Specialist cosmetic databases also list 1015787-46-8 and 211811-62-0, while an EU SCCS document identifies 68909-20-6 / 102262-30-6 for Silica Silylate in the context of nano-material assessment.
For your SDP CMS: use 68909-20-6 as the primary CAS if that is the CAS stated on the actual grade's TDS/COA.
Silica Silylate can modify the rheological behaviour of cosmetic formulations. Its fine particles can interact with the formulation's continuous phase and contribute to increased structure and consistency.
This can help formulate products requiring:
The final viscosity depends on particle characteristics, concentration, surface treatment, dispersion conditions and the formulation medium.
Silica Silylate is recognized as an emulsion-stabilising ingredient.
It can help support the physical stability of formulations containing different phases by modifying interfacial and rheological properties.
Potential benefits include:
Silica Silylate can function as an anticaking agent, helping reduce sticking and agglomeration in suitable powder systems.
Potential applications include:
Silica Silylate is also recognized as an antifoaming agent. It can help suppress unwanted foam during cosmetic manufacturing or application.
Silica Silylate can function as a bulking agent, contributing to the physical structure and density characteristics of cosmetic formulations.
COSMILE Europe identifies Silica Silylate as a skin-conditioning ingredient and specifically recognizes an emollient function.
This makes it relevant to selected:
Hydrophobic silica derivatives can interact strongly with oils and can be useful in formulations requiring oil absorption and oil-phase structuring. Specialist cosmetic references describe Silica Silylate as having strong absorption characteristics for oil and sebum.
Silica Silylate is particularly useful to consider in anhydrous and oil-rich systems, where surface-modified silica can provide structure without relying on conventional water-phase thickeners.
Potential applications include:
Potential decorative cosmetic applications include:
The ingredient's rheological and surface properties can help control texture, dispersion and product consistency.
When formulating with Silica Silylate, evaluate:
Because commercial grades can differ significantly, formulation testing should be performed with the specific grade intended for production.
Silica Silylate can be used in suitable:
Silica Silylate is a synthetic, surface-modified silica ingredient used in cosmetics for viscosity control, emulsion stabilization, anticaking, antifoaming, bulking and skin conditioning.
The INCI name is Silica Silylate.
A commonly referenced CAS number is 68909-20-6. Different identifiers can occur depending on the specific material and regulatory classification.
Yes. Silica Silylate is a surface-modified silica with hydrophobic characteristics.
It is used for anticaking, antifoaming, bulking, emulsion stabilization, skin conditioning and viscosity control.
Yes. It can be used in suitable foundations, concealers, lip products, eye makeup, pigment systems and other decorative cosmetic formulations.
No. They are separate INCI ingredients with different surface modifications and should be treated as separate raw materials.
Silica Silylate is generally described as insoluble in water.
Yes. Viscosity controlling is a recognized cosmetic function of Silica Silylate.
| Parameter | Specification |
|---|---|
| Appearance | White to off-white powder |