Skincare Ingredient
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Phenyl Trimethicone
In Skincare: Is Phenyl Trimethicone Safe? Comedogenic Rating & Side Effects
Safety Information
Quick Insights
At a glance
- 01
Phenyl trimethicone is a silicone that provides occlusive hydration sealing and conditioning benefits for the skin.
- 02
Compared to some other silicone ingredients, phenyl trimethicone exhibits a higher viscosity and imparts a drier feel.
- 03
Phenyl trimethicone is frequently incorporated into formulations for skincare, makeup, and hair care products.
- 04
The Cosmetic Ingredient Review (CIR) Expert Panel considers phenyl trimethicone safe for use in cosmetics.
Key Benefits
What Phenyl Trimethicone does for your skin
Overview
Ingredient Profile
Data & Research
Scientific Facts
Common Uses
Formulation in Phenyl Trimethicone
Role of Phenyl Trimethicone
Active Cosmetic Mechanisms
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.
HAIR CONDITIONING
Hair SoftenerImproves hair manageability, softness, and appearance
SCIENTIFIC ANALYSIS
// Evidence: Hair conditioning ingredients smooth the cuticle, reduce frizz, and add shine through cationic surfactants (behentrimonium chloride), silicones (dimethicone, amodimethicone), natural oils, and proteins. These deposit on negatively charged damaged sites, neutralizing charge, filling surface irregularities, and providing lubrication. Mechanism involves electrostatic attraction, film formation, and surface smoothing.
SKIN CONDITIONING - OCCLUSIVE
Moisture Barrier CreatorSeals moisture in skin with protective barrier
SCIENTIFIC ANALYSIS
// Evidence: Occlusive-type skin conditioners form protective hydrophobic layer preventing transepidermal water loss. Ingredients include petrolatum, mineral oil, dimethicone, beeswax, and lanolin. The mechanism involves creating semi-permeable barrier on skin surface that reduces water evaporation while allowing some gas exchange. Most effective at preventing moisture loss, particularly beneficial for dry, dehydrated, or compromised skin. Occlusion degree varies by ingredient molecular weight and film properties.
Products
containing Phenyl Trimethicone
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References
Scientific sources
International Journal of Toxicology, 2006, pages 1-89
Journal of Cosmetic Science, June 2003, pages 335-351
Silicone Surfactants, 1999, page 190
International Journal of Toxicology, 1986, pages 353-371
Similar Ingredients
Ingredients with similar chemical profiles and skincare properties.
Frequently Asked Questions
Phenyl Trimethicone — common questions
What is Phenyl Trimethicone in skincare?
Phenyl trimethicone is a white silicone fluid. It’s a component used in the formulation of various cosmetic and personal care products.
What does Phenyl Trimethicone do? / Functions of Phenyl Trimethicone?
Common functions: ANTIFOAMING, HAIR CONDITIONING, SKIN CONDITIONING - OCCLUSIVE.
What is the comedogenic rating of Phenyl Trimethicone? / Is Phenyl Trimethicone comedogenic?
Phenyl Trimethicone has a comedogenic rating of 1 out of 5. A rating of 1 means it is unlikely to clog pores.
Does it clog pores?
Phenyl Trimethicone is unlikely to clog pores (rating 1/5).
Is Phenyl Trimethicone safe for skin?
Phenyl Trimethicone has a safety rating of 1 out of 5. A rating of 1 means it is generally considered safe for most skin types. Note: Phenyl Trimethicone is a silicone emollient with very low irritation and sensitization risk and low likelihood of clogging pores, as determined by Cosmetic Ingredient Review (CIR) style assessments an
Is Phenyl Trimethicone good for sensitive skin?
Phenyl Trimethicone 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 Phenyl Trimethicone in skincare?
Known considerations: Phenyl Trimethicone is a silicone emollient with very low irritation and sensitization risk and low likelihood of clogging pores, as determined by Cosmetic Ingredient Review (CIR) style assessments and common cosmetic safety references. It is generally recognized as safe for use in cosmetics based on available data, with no significant concerns identified for the general population.