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Moumoujus

ISOBUTYL METHACRYLATE.

Avoid CAS 97-86-9 / FILM FORMING

Isobutyl Methacrylate is a reactive monomer primarily recognized for its ability to polymerize, forming film-forming agents. Within cosmetic applications, its principal role is observed in nail enhancement formulations, where it contributes to the formation of a continuous protective film.

Summary

Film-forming agent

Science

Mechanism of Action

This ingredient functions as a monomer, readily undergoing polymerization to yield homopolymers and copolymers. When utilized in cosmetic products, particularly those designed for nail enhancements, its mechanism involves the creation of a durable, continuous film on the nail surface.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

Data specific to 'dusting' behavior in cosmetic formulations is not available for this ingredient.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Isobutyl Methacrylate exhibits sensitivity to heat, air, and light, making it susceptible to premature polymerization, which could lead to container rupture. Optimal storage requires airtight aluminum or stainless steel containers at temperatures not exceeding 25°C, ideally with a stabilizing air pocket. Inhibitors, such as hydroquinone monomethyl ether, are typically incorporated to maintain stability and prevent undesired polymerization.

Conflicts

  • strong oxidizing acids (liberates heat, vigorous exothermic reaction)
  • caustic solutions (generates heat)
  • alkali metals (generates flammable hydrogen)
  • hydrides (generates flammable hydrogen)
  • oxidizing agents

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk High

The CIR Expert Panel deems Isobutyl Methacrylate safe exclusively for use in nail enhancement products, provided direct skin contact is meticulously avoided. Products containing this ingredient must include explicit instructions to prevent skin exposure due to its significant sensitizing potential. While a related compound, Butyl Methacrylate, is listed by the FDA for indirect food contact, and methacrylate ester monomers are generally permissible in the EU with potential specific restrictions, its direct application to skin is strongly cautioned against.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

Isobutyl Methacrylate is deemed safe only for nail enhancements when strict avoidance of skin contact is maintained, rendering it unsuitable for direct skin application in precision skincare formulations due to its high irritancy and sensitizing potential.

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