Bis-peg-18 Methyl Ether Dimethyl Silane
Also known as PEG-18 silane, Dimethyl silane PEG-18 methyl ether, Water-dispersible silicone
“No regulator has issued a verdict on this ingredient.”
No PubMed studies specific to Bis-PEG-18 Methyl Ether Dimethyl Silane were identified. A search for the ingredient by name returned 12 unrelated results. The CIR Quick Reference Table (QRT-122017revised072018.pdf) was searched and contains no entry for this ingredient — the table lists Bis-PEG-15 Methyl Ether Dimethicone and Bis-PEG-20 Dimethicone but skips Bis-PEG-18 Methyl Ether Dimethyl Silane entirely, confirming it has not been assessed by CIR as of the 2018 QRT. The 1,4-dioxane byproduct concern applies at the class level to all PEG-ethoxylated ingredients; no ingredient-specific dioxane data exists. The Good Scents Company database (CAS 67846-47-3) notes that oral, dermal, and inhalation toxicity have not been determined for this ingredient.
Water-dispersible silicone providing emollient skin feel and smoothing properties
Used in light, watery formulations; reduces tackiness; provides silky texture
Non-comedogenic (comedogenicity rating 0 per cosmetic industry sources)
- · 1,4-dioxane potential trace contaminant from ethoxylation process (class-level concern for all PEG ingredients; no ingredient-specific data available)
- · No CIR safety assessment on record as of QRT-122017revised072018
- · No peer-reviewed toxicological studies specific to this ingredient identified in PubMed