Ingredient review

Bis-Glyceryl Dimethacrylate Pyromellitate

INCI: BIS(GLYCERYL DIMETHACRYLATE) PYROMELLITATE

A synthetic film-former that helps makeup and nail polish last longer, but it's not a hydrating or active skincare ingredient.

beautyskincarenail care

In plain English

This is a man-made ingredient that creates a flexible, waterproof film on skin or nails. Think of it like a clear, invisible glue that helps makeup stay put and nail polish resist chipping. It doesn't moisturize or treat your skin—it's purely a performance booster for long-wear products.

Review score

Safety, usefulness, and evidence

3.5Good
3.5/ 5

Potentially useful with some tradeoffs

The evidence base is useful, but some claims depend heavily on the formula.

Risk flags are low for most users, though the finished product can still irritate.

Source
synthetic
Evidence
moderate
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

Bis-Glyceryl Dimethacrylate Pyromellitate is generally a lower-concern ingredient when the full formula suits your skin.

Plain-English read

Treat this as a practical screening step before you compare products that contain this ingredient.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Bis-Glyceryl Dimethacrylate Pyromellitate.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.

Score terms in plain English

Irritation risk

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

A synthetic polymer derived from methacrylate and pyromellitic acid, designed to form a durable, flexible film when applied to skin or nails.

How it works

When the product dries, the molecules link together into a continuous film that adheres tightly to the surface. This film resists water, oil, and friction, which is why it's popular in waterproof and long-wear formulas.

Pros

Excellent wear time

Helps makeup and nail polish last through sweat, water, and daily activities without smudging or chipping.

Flexible film

Unlike some stiff polymers, this one forms a flexible layer that moves with your skin or nails, reducing cracking.

Cons and cautions

Can feel tight

The film can create a slight pulling sensation on lips or eyelids, which some find uncomfortable.

Not eco-friendly

As a synthetic polymer, it is not biodegradable and may contribute to microplastic pollution.

Best for

  • Anyone wanting long-lasting makeup or nail polish
  • People who need waterproof or transfer-resistant products

Use caution if

  • Those with very dry or brittle nails (may worsen dryness)
  • People who prefer minimal, breathable makeup formulas

Usage tips

Use a gentle, oil-based makeup remover to fully dissolve products containing this ingredient.
Avoid layering too many film-forming products to prevent a heavy, stiff feel on skin.

Safety summary

Generally considered safe for topical use at typical concentrations. Minor skin irritation is rare. Not known to be a sensitizer, but those with very sensitive skin should patch-test long-wear formulas.

Research notes

Limited independent safety studies are available. The Cosmetic Ingredient Review (CIR) has evaluated related methacrylate polymers and found them safe when formulated to avoid skin penetration. No significant toxicity concerns have been reported.

Common label clues

Typical concentration
1–10% in nail and makeup formulas
Regulatory status
Approved for use in cosmetics in the EU, US, and many other regions. No specific restrictions beyond general cosmetic safety requirements.
Common uses
Nail polishes, Long-wear lipsticks, Waterproof eyeliners, Mascaras
Environmental note
As a synthetic polymer, it is not readily biodegradable. Some jurisdictions are reviewing microplastic ingredients, so its use may face future regulation.

Good to know

  • This ingredient is chemically related to acrylics used in nail enhancements, but it's used in much lower concentrations in cosmetics.
  • It is not a humectant or emollient, so pair it with hydrating ingredients if you have dry skin.

Common questions

What is Bis-Glyceryl Dimethacrylate Pyromellitate in beauty products?

This is a man-made ingredient that creates a flexible, waterproof film on skin or nails. Think of it like a clear, invisible glue that helps makeup stay put and nail polish resist chipping. It doesn't moisturize or treat your skin—it's purely a performance booster for long-wear products.

What does Bis-Glyceryl Dimethacrylate Pyromellitate do in a beauty product?

When the product dries, the molecules link together into a continuous film that adheres tightly to the surface. This film resists water, oil, and friction, which is why it's popular in waterproof and long-wear formulas.

Is Bis-Glyceryl Dimethacrylate Pyromellitate safe for most people?

Generally considered safe for topical use at typical concentrations. Minor skin irritation is rare. Not known to be a sensitizer, but those with very sensitive skin should patch-test long-wear formulas.

Who should be careful with Bis-Glyceryl Dimethacrylate Pyromellitate?

Those with very dry or brittle nails (may worsen dryness) People who prefer minimal, breathable makeup formulas

Research sources

Cosmetic Ingredient Review – Acrylates Polymers SafetyOpenPubChem – Bis(glyceryl dimethacrylate) pyromellitateOpenEuropean Chemicals Agency – Methacrylate polymersOpen

Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.