Polymethacrylic Acid

INCI: POLYMETHACRYLIC ACID

CAS Number
25087-26-7
Function
Viscosity controlling
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted for cosmetic use; related acrylate polymers reviewed by CIR and found safe

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Residual methacrylic acid monomer should be controlled as it is a skin and eye irritant at low pH. At very low pH the un-neutralized polymer itself can be irritating; typically used in partially or fully neutralized form.

โš ๏ธ
Concern Level: Moderate

Regulatory Flags

epa_safer_alternative

Frequently Asked Questions

Is Polymethacrylic Acid safe in cosmetics?

Residual methacrylic acid monomer should be controlled as it is a skin and eye irritant at low pH. At very low pH the un-neutralized polymer itself can be irritating; typically used in partially or fully neutralized form. The EU classifies Polymethacrylic Acid as "permitted". Safety rating: GOOD.

Is Polymethacrylic Acid allowed in the EU?

Polymethacrylic Acid EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Polymethacrylic Acid do in cosmetics?

Polymethacrylic Acid functions as: Viscosity controlling. It is classified as a cosmetic ingredient in our database. CAS number: 25087-26-7.

What is the Margin of Safety for Polymethacrylic Acid?

not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

๐Ÿ“ฑ

Is Polymethacrylic Acid in Your Products?

Scan any product label with Piro โ€” our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.

Try Piro Free โ†’

Analyze Your Full Ingredient List

Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Polymethacrylic Acid in your formulation.