Skincare Ingredient
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Silica Silylate
In Skincare: Is Silica Silylate Safe? Comedogenic Rating & Side Effects
Safety Information
Overview
Ingredient Profile
Data & Research
Scientific Facts
Common Uses
Formulation in Silica Silylate
Role of Silica Silylate
Active Cosmetic Mechanisms
ANTICAKING
Free-Flow AgentPrevents powder particles from clumping together
SCIENTIFIC ANALYSIS
// Evidence: Anticaking agents prevent agglomeration by reducing interparticulate forces and moisture-induced bridging. These include hydrophobic materials like magnesium stearate, silica (fumed and precipitated forms), talc, and calcium silicate that coat particle surfaces, reducing van der Waals forces and preventing moisture absorption. The mechanism creates physical barriers between particles.
ANTIFOAMING
Foam ReducerReduces or prevents unwanted foam formation
SCIENTIFIC ANALYSIS
// Evidence: Antifoaming agents destabilize foam structures by reducing surface tension, promoting bubble coalescence, or breaking foam films. These include silicone-based compounds (dimethicone, simethicone), fatty alcohols, and oils that spread rapidly at air-liquid interfaces. The mechanism involves displacing surfactant molecules from bubble surfaces, reducing film elasticity.
BULKING
Volume BuilderAdds volume and body without adding weight
SCIENTIFIC ANALYSIS
// Evidence: Bulking agents increase product volume while maintaining low density. These include low-density powders (hollow microspheres, perlite, expanded polymers), aerogels, and materials with high specific volume. Mechanism involves entrapping air within particle structures or creating open, porous networks. In hair products, bulking agents coat individual strands, increasing diameter and creating space between hairs.
EMULSION STABILISING
Emulsion StabilizerPrevents oil and water mixtures from separating
SCIENTIFIC ANALYSIS
// Evidence: Emulsion stabilizers maintain dispersion of immiscible phases by preventing droplet coalescence through interfacial film formation, electrostatic repulsion, steric stabilization, viscosity enhancement, or network formation. Stabilizers include polymers (carbomers, xanthan gum), proteins, and modified celluloses. The combination of primary emulsifiers with secondary stabilizers creates robust lamellar liquid crystalline structures.
SKIN CONDITIONING
Skin EnhancerMaintains skin in good condition and improves its feel
SCIENTIFIC ANALYSIS
// Evidence: Skin conditioning ingredients enhance appearance, texture, and health of skin through various mechanisms. This broad category encompasses emollients, humectants, occlusives, and other agents that improve skin feel, appearance, and function. May work by moisturizing, smoothing, softening, or protecting skin. Effects include improved tactile properties, enhanced barrier function, and better overall skin condition.
SKIN CONDITIONING - EMOLLIENT
Skin SoftenerSoftens and smooths skin by filling gaps between cells
SCIENTIFIC ANALYSIS
// Evidence: Emollient ingredients create smooth, soft skin by filling spaces between corneocytes in stratum corneum. These include esters (isopropyl palmitate), oils (jojoba, argan), fatty alcohols, and silicones. The mechanism involves spreading on skin surface, filling microscopic irregularities, and creating lubricious film. Effects are immediate tactile improvement and visual smoothing. Emolliency measured by spreading coefficient and skin feel assessments.
VISCOSITY CONTROLLING
Thickness RegulatorAdjusts product thickness and flow properties
SCIENTIFIC ANALYSIS
// Evidence: Viscosity controlling ingredients modify product flow characteristics through thickening or thinning. Thickeners include natural gums (xanthan, guar), synthetic polymers (carbomers, acrylates), and inorganic thickeners (silica, clays). Mechanism varies: polymer chain entanglement, hydrogen bonding networks, particle association, or swelling. Rheology modifiers create desired texture, prevent separation, control application properties, and affect sensory perception. Can produce Newtonian (constant viscosity) or non-Newtonian (shear-thinning, thixotropic) flow behavior.
Products
containing Silica Silylate
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References
Scientific sources
International Journal of Toxicology
May-June 2013 Supplement
pages 5S-24S; and May 2014 Supplement
pages 65S-115S
Similar Ingredients
Ingredients with similar chemical profiles and skincare properties.
Frequently Asked Questions
Silica Silylate — common questions
What is Silica Silylate in skincare?
Silica silylate, silica dimethyl silylate, trimethylsiloxysilicate, and trifluoropropyldimethyl/trimethylsiloxysilicate are siloxane polymers. Siloxane polymers are materials composed of repeating units containing alternating silicon and oxygen atoms in their chain structure. These ingredients appear as solids and are not soluble in water. They are commonly found in a variety of cosmetic products, including bath products, eye makeup, makeup, lipstick, nail polish, and hair/skin care formulations
What does Silica Silylate do? / Functions of Silica Silylate?
Common functions: ANTICAKING, ANTIFOAMING, BULKING, EMULSION STABILISING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT.
What is the comedogenic rating of Silica Silylate? / Is Silica Silylate comedogenic?
The comedogenic rating of Silica Silylate has not been established in our database.
Does it clog pores?
Whether Silica Silylate clogs pores depends on the formulation and concentration.
Is Silica Silylate safe for skin?
Silica Silylate has a safety rating of 2 out of 5. A rating of 2 means it is generally considered safe for most skin types. Note: Modified silica used as thickener/anti-caking; CIR/EWG indicate low systemic risk and not carcinogenic in this form; main concern is mild irritation/dryness or inhalation risk in loose powders/sprays.
Is Silica Silylate good for sensitive skin?
Silica Silylate has an irritancy rating of 1 out of 5. A rating of 1 means it is generally well-tolerated.
What are the side effects of Silica Silylate in skincare?
Known considerations: Modified silica used as thickener/anti-caking; CIR/EWG indicate low systemic risk and not carcinogenic in this form; main concern is mild irritation/dryness or inhalation risk in loose powders/sprays.