Science
Mechanism of Action
This copolymer functions by creating a continuous, imperceptible film on the skin, hair, or nails. This physical barrier contributes to maintaining the skin's condition and provides a smoothing effect. Its emollient properties work to soften the skin, improving its overall texture and feel.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyethylene glycols generally exhibit diverse solubility profiles. As the molar mass increases, both the water solubility and hygroscopicity of polyethylene glycols tend to decrease.
Safety
Safety Profile
No specific Cosmetic Ingredient Review (CIR) report was identified for ISOPRENE/MA/METHOXY PEG-40 COPOLYMER. However, related Polyethylene Glycols (PEGs) are broadly considered safe for cosmetic use under intended conditions. PEG-40 hydrogenated castor oil, a related compound, was deemed safe at concentrations up to 100% when formulated to be non-irritating. Key safety considerations for PEGs include the potential for contamination with residual ethylene oxide and 1,4-dioxane, both classified as carcinogens, which can occur during the ethoxylation process. Additionally, PEGs can act as penetration enhancers, potentially increasing the absorption of other topical ingredients. It is specifically advised to avoid applying PEG-containing products to compromised or broken skin due to a potential risk of kidney toxicity.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This ingredient offers valuable film-forming, emollient, and skin-conditioning properties, but requires careful formulation and avoidance on compromised skin due to potential processing contaminants and penetration enhancement capabilities.
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