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ISOBUTYL METHACRYLATE/TRIFLUOROETHYLMETHACRYLATE/BIS-HYDROXYPROPYL DIMETHICONE ACRYLATE COPOLYMER.

Questionable CAS 321735-42-6 / FILM FORMING, HAIR FIXING

This advanced copolymer functions as a film-forming and skin conditioning agent, meticulously engineered to create an ultra-thin, protective barrier on the skin's surface. It effectively minimizes transepidermal water loss and provides a shield against external aggressors. Recognized by the FDA as a skin protector, this ingredient additionally confers non-greasy, UV-resistant properties, supporting skin hydration and resilience.

Film-forming agent Skin conditioning agent Hair fixative

Science

Upon topical application, this sophisticated copolymer forms a continuous, imperceptible film across the skin, acting as a physical barrier. This barrier significantly reduces transepidermal water loss (TEWL), thereby preserving skin hydration and fortifying the stratum corneum against the ingress of exogenous substances. Furthermore, it contributes UV-resistant properties and leaves a non-greasy tactile finish. As a skin conditioning agent, it aims to enhance or restore the skin's intrinsic tolerance to various external factors, including the response of melanocytes.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

No specific data regarding dusting properties for this ingredient was found in the available research.


The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Conflicts

  • Cationic ingredients

Safety

CIR Status
Safe as used
Sensitization risk Low

The US FDA considers this ingredient a safe skin protector when formulated at low concentrations, attributing its non-irritating profile to a high molecular weight which limits skin absorption. The Cosmetic Ingredient Review (CIR) Expert Panel also concluded that related dimethicone crosspolymer ingredients are safe. However, the European Union Ecolabel program has raised substantial concerns, noting the substance is persistent in the environment, not anaerobically degradable, suspected of damaging fertility, and has shown clear evidence of endocrine disruption in at least one animal study. It may also have long-lasting harmful effects on aquatic life.


Your Skin

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Questionable

While this copolymer offers beneficial film-forming and hydrating properties, with recognized topical safety by US authorities, significant environmental persistence and potential endocrine disruption concerns raised by the EU Ecolabel warrant careful consideration for its inclusion in precision skincare formulations.


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