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Moumoujus

METHACRYLAMIDE.

Avoid CAS 79-39-0 / NOT REPORTED

Methacrylamide is an organic compound primarily recognized as a monomer, serving as a fundamental building block for various polymers and copolymers. In precision skincare formulations, these derived polymers function as essential aids that contribute to product texture, stability, and film-forming properties.

Summary

Polymer precursor Film-forming agent (via derived polymers) Binder (via derived polymers) Stabilizer (via derived polymers)

Science

Mechanism of Action

When polymerized, methacrylamide forms macromolecules that act on the skin's surface. These high molecular weight polymers are known to create a protective film, improve the tactile qualities of products, and stabilize emulsion systems. Related polymers, such as polyacrylamide, have also been noted for their ability to enhance skin hydration by reducing transepidermal water loss. The methacrylamide monomer itself is the chemical precursor to these functional polymeric structures.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Methacrylamide exhibits general stability under standard conditions. While polymers incorporating methacrylamide can be pH-responsive, with studies observing behavioral shifts in a pH range of 7-13, overall formulation instabilities with methacrylate copolymers may arise from interactions with low molecular weight components, physical changes, or impurities inherent from the manufacturing process.

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
5%
Sensitization risk High

While the Cosmetic Ingredient Review (CIR) Expert Panel has deemed polyacrylamide (a polymer formed from related monomers) safe for cosmetic application, provided the residual acrylamide monomer level does not exceed 5 ppm, methacrylamide itself, as an industrial chemical, is classified as irritating to the eyes, respiratory system, and skin, and is harmful if ingested. The 5 ppm concentration limit specifically refers to residual monomer levels within derived polymers, not the safe direct application of methacrylamide. Manufacturers are responsible for rigorously substantiating product safety to ensure consumer safety.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

Methacrylamide, as a monomer, is an industrial irritant and should be strictly avoided in skincare formulations; its only acceptable presence is as a tightly controlled residual trace within high-molecular-weight derived polymers, which themselves offer formulation benefits.

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References

Sources