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| Catalog Number | CI-HC-0107 |
| Product Name | Dimethiconol |
| CAS | 31692-79-2 |
| Structure |  |
| Synonyms | Siloxanes and Silicones, di-Me, hydroxy-terminated |
| Description | Dimethiconol is a type of silicone-based polymer used in various personal care products, such as hair care, skin care, and cosmetics. It is a highly viscous, clear liquid that functions as an emollient, lubricant, and conditioning agent. |
| IUPAC Name | Dihydroxy(dimethyl)silane |
| Canonical SMILES | C[Si](C)(O)O |
| InChI | XCLIHDJZGPCUBT-UHFFFAOYSA-N |
| InChI Key | InChI=1S/C2H8O2Si/c1-5(2,3)4/h3-4H,1-2H3 |
| Boiling Point | 182 °C |
| Density | 0.98 g/mL |
| Appearance | clear, colorless and odorless liquid polymer |
| Application | 1. Dimethiconol is used as a emollient and conditioning agent in personal care products, such as shampoos, conditioners, and lotions. 2. It is also used as a lubricant in antiperspirants, deodorants, and shaving creams. 3. Dimethiconol can be found in sunscreens, face powders, and other cosmetic products to provide a soft and silky feel. 4. It is also used in industrial applications as a silicone lubricant, release agent, and defoaming agent. 5. In the medical field, dimethiconol is used as a coating for pills and tablets to improve swallowing and reduce stomach irritation. |
| Features And Benefits | 1. Dimethiconol works as a moisturizer in cosmetics. 2. It adds shine and smoothness to hair and skin. 3. It makes hair and skin feel silky and soft. 4. It helps to protect hair and skin from environmental damage. 5. It improves the spreadability of cosmetic products. 6. It enhances the texture of cosmetics. |
Dimethiconol is a high-viscosity, hydroxyl-terminated polydimethylsiloxane that serves multiple functions in cosmetic formulations. This clear, odorless, viscous liquid is soluble in isopropyl myristate, yet it remains insoluble in mineral oil, propylene glycol, ethanol, and water. In hair care products, particularly in 2:1 shampoo formulations, Dimethiconol imparts substantive gloss and conditioning properties due to its high viscosity and hydroxyl functionality. In skincare and antiperspirant/deodorant applications, it effectively reduces tackiness, provides a water-resistant barrier, and creates a smooth, non-sticky, non-oily texture, enhancing the overall user experience.
Johnson Jr, Wilbur, et al. International journal of toxicology, 2017, 36(3), 31S-50S.
Dimethiconol and its ester derivatives are commonly used as skin conditioners or hair conditioners in cosmetics. This work evaluated 28 dimethiconol-related ingredients, including capped homopolymers and copolymers of dimethiconol. Results indicate that these ingredients are not absorbed through the skin and are safe under current use and concentrations described in this safety assessment.
· Out of the 28 ingredients under review in this safety assessment, the Food and Drug Administration has been informed that the following 10 are utilized in personal care products: dimethiconol, dimethiconol arginine, dimethiconol beeswax, dimethiconol cysteine, dimethiconol meadowfoamate, dimethiconol methionine, dimethiconol panthenol, dimethiconol stearate, dimethiconol/silsesquioxane copolymer, and trimethylsiloxy-silicate/dimethiconol crosspolymer.
· Of the ingredients surveyed, dimethiconol was the most widely used and most concentrated ingredient, being used in 1,169 cosmetic formulations at concentrations ranging from 0.004% to 36%.
· According to the survey, the categories of cosmetic uses of dimethiconol include baby products, bath products, eye makeup, perfume products, hair dye/hair care products, make-up products, nail care products, shaving products, skin care products and sunscreen products.
What is dimethiconol chemically?
Dimethiconol is a silicone polymer with a hydroxyl group on both ends of the molecule.
What functionality and reactivity does dimethiconol have?
Dimethiconol has added functionality and reactivity compared to dimethicone.
What is dimethiconol commonly used for in hair products?
Dimethiconol is commonly used in hair products for conditioning and imparting shine.
What are the moisturizing properties of dimethiconol?
Dimethiconol acts as a moisturizer by increasing hydration, coating the surface of the skin and hair, and preventing evaporative water loss.
What types of products can dimethiconol be found in?
Dimethiconol is often used in gel creams and serums.
What are the occlusive properties of dimethiconol?
Dimethiconol's occlusive properties can protect the skin from external allergens and pollutants.
Why can dimethiconol be problematic for some individuals?
Dimethiconol can cause a greasy feeling on the skin or weigh down the hair if it is not thoroughly removed with cleanser or clarifying shampoo.
Who should avoid products containing dimethiconol?
Individuals with sensitive, oily, or acne-prone skin may want to avoid products containing dimethiconol.
Is dimethiconol safe for topical usage?
Yes, dimethiconol is considered safe for topical usage by the Cosmetic Ingredient Review.
Can dimethiconol penetrate the skin and enter the bloodstream?
No, dimethiconol's molecules are too large to penetrate the skin and enter the bloodstream, making it unlikely to cause toxicity or danger.
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