EWG Safety Score
What Is Dimethicone?
Dimethicone is a type of silicone (technically known as a non-volatile/linear silicone). It is one of the most frequently used emollient (softening) ingredients in moisturizers, well known for its gentleness and effectiveness. So, is dimethicone good for skin? Dimethicone is recognized as a "skin protectant" by the U.S. FDA, when used in over-the-counter products in concentrations of 1-30%. It forms an air-permeable barrier that works to prevent moisture loss, so skin better retains hydration, while still allowing natural perspiration to evaporate.
It imparts a wonderfully silky (but not greasy) feel, which makes it especially popular in oil-free moisturizers. Dimethicone may also be used with other ingredients such as alumina to coat zinc oxide or titanium dioxide in sunscreen formulation to help the actives distribute evenly on skin, providing uniform protection.
Dimethicone is considered a synthetic ingredient, even though it's derived from natural silicon. Dimethicone is recognized as safe in cosmetic products and has a long track record of safety.
Clinical Evidence & References
- 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
Published Research
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Dimethicone: Safety and efficacy as skin protectant Int J Toxicol, 2003
Frequently Asked Questions
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Cyclomethicone
A type of silicone used in skincare
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A silicone-based conditioning agent that smooths and protects the hair fibre
Dimethicone Copolyol
A type of silicone derived from silica
Dimethicone PEG-7 Phosphate
A silicone-based cleanser and emulsifier that helps remove oil and impurities
Dimethicone PEG-8 Phosphate
A silicone-based conditioning agent that softens skin and enhances product texture
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