Ingredient review

Acrylates/Vinyl Neodecanoate Crosspolymer

INCI: ACRYLATES/VINYL NEODECANOATE CROSSPOLYMER

A safe, synthetic thickener that gives gels and creams a smooth, non-sticky feel without clogging pores.

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In plain English

This ingredient is a synthetic polymer that helps thicken and stabilize skincare products. It creates a smooth, lightweight gel texture that spreads easily and doesn't feel sticky or heavy on the skin. It also helps keep other ingredients evenly mixed and can form a thin, breathable film that improves product wear.

Quick decision guide

Useful, but context matters

Acrylates/Vinyl Neodecanoate Crosspolymer 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 Acrylates/Vinyl Neodecanoate Crosspolymer.
  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 crosslinked polymer made from acrylic acid and vinyl neodecanoate monomers, designed to absorb water and swell into a gel-like network.

How it works

When added to water, the polymer particles absorb liquid and swell, creating a three-dimensional network that thickens the formula. This network also traps other ingredients, preventing separation and giving the product a smooth, uniform consistency.

Pros

Lightweight texture

Creates a non-greasy, silky feel that absorbs quickly, making it ideal for gel-based moisturizers and serums.

Excellent stabilizer

Helps keep oil and water phases mixed, preventing separation and extending the shelf life of the product.

Cons and cautions

Synthetic origin

Derived from petrochemicals, which may be a concern for those seeking natural or organic formulations.

Potential tackiness at high levels

In very high concentrations, it can leave a slightly sticky or tacky residue, especially on dry skin.

Best for

  • Anyone who prefers lightweight, non-greasy textures in moisturizers or serums
  • People with oily or combination skin looking for a matte finish

Use caution if

  • Those who strictly avoid synthetic ingredients in their skincare routine

Usage tips

Use in water-based formulas; it requires neutralization (e.g., with a base like triethanolamine) to fully thicken.
Start with a low concentration (0.1–0.5%) and adjust upward to avoid an overly thick or tacky gel.
Combine with other thickeners like carbomer for a more luxurious, creamy texture.

Safety summary

Acrylates/Vinyl Neodecanoate Crosspolymer is considered safe for topical use. It has low irritation and comedogenic potential, and no significant safety concerns have been reported in cosmetic applications.

Research notes

Safety assessments by the Cosmetic Ingredient Review (CIR) panel and other regulatory bodies have concluded that this polymer is safe for use in cosmetics at typical concentrations. Studies show minimal skin irritation and no evidence of systemic toxicity.

Common label clues

Typical concentration
0.1% to 2%
Regulatory status
Approved for use in cosmetics in the EU, US, and other major markets. Generally recognized as safe when used as directed.
Common uses
Gels, Creams, Lotions, Serums, Sunscreens
Environmental note
As a synthetic polymer, it is not biodegradable. However, it is used in very low concentrations and is not known to bioaccumulate.

Good to know

  • This polymer is often used in 'gel-cream' hybrid formulas to achieve a lightweight yet moisturizing feel.
  • It is compatible with a wide pH range (typically pH 5–8), making it versatile for various formulations.

Common questions

What is Acrylates/Vinyl Neodecanoate Crosspolymer in beauty products?

This ingredient is a synthetic polymer that helps thicken and stabilize skincare products. It creates a smooth, lightweight gel texture that spreads easily and doesn't feel sticky or heavy on the skin. It also helps keep other ingredients evenly mixed and can form a thin, breathable film that improves product wear.

What does Acrylates/Vinyl Neodecanoate Crosspolymer do in a beauty product?

When added to water, the polymer particles absorb liquid and swell, creating a three-dimensional network that thickens the formula. This network also traps other ingredients, preventing separation and giving the product a smooth, uniform consistency.

Is Acrylates/Vinyl Neodecanoate Crosspolymer safe for most people?

Acrylates/Vinyl Neodecanoate Crosspolymer is considered safe for topical use. It has low irritation and comedogenic potential, and no significant safety concerns have been reported in cosmetic applications.

Who should be careful with Acrylates/Vinyl Neodecanoate Crosspolymer?

Those who strictly avoid synthetic ingredients in their skincare routine

Research sources

Cosmetic Ingredient Review (CIR) Safety AssessmentOpenEuropean Chemicals Agency (ECHA) InformationOpenPubMed - Polymer Safety in CosmeticsOpen

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.