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METHYLBUTENE/PIPERYLENE COPOLYMER.

Insufficient Data CAS 79586-89-3 / PLASTICISER

METHYLBUTENE/PIPERYLENE COPOLYMER is a synthetic polymer designed to act as a plasticizer, enhancing the flexibility and smoothness of materials. Within skincare formulations, it contributes to product aesthetics and performance by providing film-forming, viscosity-controlling, and binding functionalities, resulting in a more refined texture and application.

Summary

Plasticizer Film Former Viscosity Controller Binder

Science

Mechanism of Action

In topical applications, METHYLBUTENE/PIPERYLENE COPOLYMER functions principally as a plasticizer within the product matrix, promoting material pliancy and a soft, smooth tactile sensation. Its polymeric structure also enables it to form a cohesive film on the skin's surface, regulate formulation viscosity, and effectively bind diverse ingredients, thereby optimizing product stability and sensory characteristics.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

While generally stable under typical ambient conditions, this copolymer warrants careful handling. Data from related polybutylene polymers indicate potential reactivity, a risk of ignition, and the formation of explosive vapor mixtures with air. Therefore, it is imperative to store METHYLBUTENE/PIPERYLENE COPOLYMER away from heat, hot surfaces, sparks, open flames, and other potential ignition sources to preserve its integrity and ensure safety.

Safety

Safety Profile

CIR Status
Insufficient data
Max tested
47.5%
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) Expert Panel has assessed the broader 'polyene group,' encompassing this ingredient, as safe in cosmetics under current use practices. However, METHYLBUTENE/PIPERYLENE COPOLYMER (CAS Reg. No. 26813-14-9) itself has not undergone a dedicated CIR safety assessment, resulting in an 'insufficient data' classification for its specific cosmetic use. Notably, it holds FDA approval as a food contact substance in pressure-sensitive adhesives, with a maximum use level of 47.5% by weight of the final adhesive. While no GHS hazard statements for dermal or oral toxicity or irritation have been identified for the copolymer itself, its constituent monomers, Piperylene and 2-Methyl-2-butene, are classified as causing skin and serious eye irritation.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Insufficient Data

Given the lack of specific clinical efficacy data for METHYLBUTENE/PIPERYLENE COPOLYMER in skincare applications and its "insufficient data" status from dedicated cosmetic safety assessments, its overall value as an active ingredient in precision skincare formulations is currently undetermined.

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