Science
Mechanism of Action
The ingredient forms a hydrophobic yet viscoelastic film, effectively preventing water loss and guarding against exogenous stressors. As an emulsifier, it enables stable oil-in-water mixtures, concurrently improving product spreadability and boosting the absorption of other active ingredients.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Functional stability is maintained within a pH range of 5.5 to 8.5; at pH 5 and 1% concentration, 20% hydrolysis was observed over 45 days. It effectively creates stable oil-water emulsions.
Safety
Safety Profile
The CIR concluded this ingredient and its broader class (Dimethicone Copolyols) are 'safe as used', with studies showing non-irritating and non-sensitizing properties at up to 40% concentration. Trace impurities, including unreacted polyethers (10-30%) and cyclosiloxanes (<0.1-1%), may be present; 1,4-dioxane contamination from PEG compounds is mitigated by proper manufacturing filtration.
Your Skin
Skin Compatibility
Our Assessment
Verdict
BIS-ISOBUTYL PEG-13/DIMETHICONE COPOLYMER is a valuable multifunctional ingredient, enhancing hydration, skin barrier function, and formulation elegance across all skin types.
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References
Sources