EWG Safety Score
What Is Dimethiconol?
Dimethiconol is a silicone-based liquid polymer that works as a skin-conditioning agent (emollient) and antifoaming agent in cosmetic formulas. It multitasks by helping lubricate skin’s surface (without feeling greasy) to enhance hydration, while modifying the formula’s texture for a more pleasant consistency.\n\nIt can also be used in hair care products as a conditioning agent and is sometimes included in hair dyes to help the color resist wash out.\n\nDimethiconol is often combined with other compounds and molecules to form derivatives such as dimethiconol arginine, dimethiconol beeswax, dimethiconol cysteine, and dimethiconol meadowfoamate—each with their own distinctive properties and functions.\n\nIn 2017, the Cosmetic Ingredient Review (CIR) Expert Panel analyzed relevant data regarding dimethiconol and concluded it is a safe cosmetic ingredient. Their report looked at personal care products containing amounts between 0.004-36%.
Clinical Evidence & References
Published Research
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CosmeticsInfo.org, Accessed September 2021, ePublication CosmeticsInfo.org, 2021
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International Journal of Toxicology, November 2017, pages 31S-50S International Journal of Toxicology, 2017
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International Journal of Cosmetic Science, April 2005, page 139 International Journal of Cosmetic Science, 2005
How widely it's used
Regulatory information
Standardised cosmetic-ingredient identifiers used by regulators.
Show identifiers
- INCI Name
- DIMETHICONOL
- Function
- Antifoaming, Emollient, Moisturising
From the Clinic
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Dimethicone/Methicone Copolymer
A silicone polymer that smooths texture and improves product spreadability in formulations
Dimethicone/Polyglycerin-3 Crosspolymer
A silicone polymer that stabilises formulations and conditions skin
Dimethicone/Vinyltrimethylsiloxysilicate Crosspolymer
A silicone polymer that creates a smooth, protective film on skin
Dimethiconol/Silsesquioxane Copolymer
A silicone-based conditioning polymer that smooths the skin surface and reduces moisture loss
Dioleyl Tocopheryl Methylsilanol
A vitamin E derivative that protects skin from oxidative stress and supports the skin barrier
Diphenyl Dimethicone
A silicone polymer that conditions skin and hair whilst helping formulations flow smoothly
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