Skincare Ingredient
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Dimethicone
In Skincare: Is Dimethicone Safe? Comedogenic Rating & Side Effects
Safety Information
Quick Insights
At a glance
- 01
Dimethicone is a widely utilized emollient valued for its gentle nature and smooth, silky texture.
- 02
The U.S. FDA recognizes dimethicone as a skin protectant when used at concentrations between 1% and 30%.
- 03
Dimethicone's hydrating properties and non-greasy feel make it a frequent ingredient in oil-free moisturizers.
- 04
In sunscreen formulations, dimethicone can aid in the even distribution of active ingredients across the skin.
- 05
Although derived from natural silicon, dimethicone is considered a synthetic ingredient.
Key Benefits
What Dimethicone does for your skin
Overview
Ingredient Profile
Role of Dimethicone
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.
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.
SKIN PROTECTING
Defensive ShieldShields skin from external aggressors and damage
SCIENTIFIC ANALYSIS
// Evidence: Skin protecting ingredients defend against environmental stressors, irritants, and damage through barrier enhancement, antioxidant activity, anti-pollution effects, or physical barriers. Include dimethicone (barrier), allantoin (soothing protectant), zinc oxide (physical protectant), and film-formers. Mechanisms vary: forming protective films, neutralizing oxidative stress, chelating pollutants, strengthening barrier function. Used in protective creams, barrier treatments, and defensive skincare against urban pollution, extreme weather.
Products
containing Dimethicone
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References
Scientific sources
Journal of Biosciences and Medicines, March 2025, pages 284-292
Military Medicine, November/December 2024, Pages e2523–e2529
FDA Code of Federal Regulations, April 2020, ePublication
International Journal of Toxicology, May 2014, pages 65S-115S
The Journal of Clinical and Aesthetic Dermatology, May 2014, pages 36-44
Dermatologic Therapy, May 2012, pages 229-233
Clinics in Dermatology, May-June 2012, pages 345-348
International Journal of Cosmetic Science, January 2008, pages 19-33
Skin Research and Technology, May 2000, pages 77-80
Similar Ingredients
Ingredients with similar chemical profiles and skincare properties.
Frequently Asked Questions
Dimethicone — common questions
What is Dimethicone in skincare?
Dimethicone is a skincare ingredient commonly used in cosmetic formulations.
What does Dimethicone do? / Functions of Dimethicone?
Common functions: ANTIFOAMING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT, SKIN PROTECTING.
What is the comedogenic rating of Dimethicone? / Is Dimethicone comedogenic?
Dimethicone has a comedogenic rating of 1 out of 5. A rating of 1 means it is unlikely to clog pores.
Does it clog pores?
Dimethicone is unlikely to clog pores (rating 1/5).
Is Dimethicone safe for skin?
Dimethicone has a safety rating of 1 out of 5. A rating of 1 means it is generally considered safe for most skin types. Note: Non-comedogenic silicone occlusive; generally well-tolerated with very low irritation/allergy risk per CIR and broad cosmetic use (may feel heavy on very oily/acne-prone skin). The Cosmetic Ingredient
Is Dimethicone good for sensitive skin?
Dimethicone 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 Dimethicone in skincare?
Known considerations: Non-comedogenic silicone occlusive; generally well-tolerated with very low irritation/allergy risk per CIR and broad cosmetic use (may feel heavy on very oily/acne-prone skin). The Cosmetic Ingredient Review Expert Panel has evaluated dimethicone and concluded it is safe for use in cosmetics in its current practices of use.