Ingredient review
Acrylates/Ceteareth-25 Methacrylate/Methacrylamide Crosspolymer
INCI: ACRYLATES/CETEARETH-25 METHACRYLATE/METHACRYLAMIDE CROSSPOLYMER
A safe, synthetic thickener and film-former that helps products feel smooth and spread evenly without clogging pores.
In plain English
This is a man-made polymer—a long chain of repeating molecules—that helps skincare products have a nice, silky texture. It thickens formulas so they don't run off your skin, and it can also form a very thin, invisible film that helps other ingredients stay put. Think of it like a gentle glue that holds the product together without being sticky or heavy.
Quick decision guide
Useful, but context matters
Acrylates/Ceteareth-25 Methacrylate/Methacrylamide 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging Acrylates/Ceteareth-25 Methacrylate/Methacrylamide Crosspolymer.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- 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
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic crosspolymer, meaning it's a large molecule made by linking smaller units (acrylates, ceteareth-25 methacrylate, and methacrylamide) together. It's designed to be water-dispersible and to provide thickening and film-forming properties.
How it works
When added to a water-based formula, the polymer chains swell and entangle, increasing the viscosity (thickness). This gives the product a pleasant, non-greasy feel. The film-forming property means it leaves a light, flexible layer on the skin that can help lock in moisture or improve the wear of makeup.
Pros
Smooth texture
Creates a silky, elegant feel on the skin without being heavy or greasy, making it ideal for lightweight serums and gels.
Stabilizing power
Helps keep ingredients evenly mixed and prevents separation, so your product stays effective from first use to last.
Cons and cautions
Synthetic origin
As a man-made polymer, it may not be suitable for those who prefer 100% natural or organic formulations.
Potential tackiness at high levels
In very high concentrations, it can leave a slightly sticky or tacky residue, though this is rare in well-formulated products.
Best for
- Anyone looking for a lightweight, non-greasy moisturizer or serum
- People with oily or combination skin who prefer a matte finish
Use caution if
- Those who strictly avoid synthetic ingredients in their routine
Usage tips
Safety summary
Acrylates/Ceteareth-25 Methacrylate/Methacrylamide Crosspolymer is considered safe for topical use. It has low irritation and comedogenic potential, making it suitable for most skin types, including sensitive skin.
Research notes
While specific studies on this exact crosspolymer are limited, the broader class of acrylate crosspolymers has been reviewed by the Cosmetic Ingredient Review (CIR) panel and found safe for use in cosmetics at typical concentrations.
Common label clues
- Typical concentration
- 0.1% to 2%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. It is not restricted at typical use levels.
- Common uses
- Serums, Moisturizers, Sunscreens, Makeup
- Environmental note
- As a synthetic polymer, its biodegradability is limited. However, it is used in very small amounts and is not known to accumulate in the environment significantly.
Good to know
- This ingredient is often used in combination with other thickeners to achieve the perfect texture.
- It is considered safe for use in cosmetics by major regulatory bodies.
Common questions
What is Acrylates/Ceteareth-25 Methacrylate/Methacrylamide Crosspolymer in beauty products?
This is a man-made polymer—a long chain of repeating molecules—that helps skincare products have a nice, silky texture. It thickens formulas so they don't run off your skin, and it can also form a very thin, invisible film that helps other ingredients stay put. Think of it like a gentle glue that holds the product together without being sticky or heavy.
What does Acrylates/Ceteareth-25 Methacrylate/Methacrylamide Crosspolymer do in a beauty product?
When added to a water-based formula, the polymer chains swell and entangle, increasing the viscosity (thickness). This gives the product a pleasant, non-greasy feel. The film-forming property means it leaves a light, flexible layer on the skin that can help lock in moisture or improve the wear of makeup.
Is Acrylates/Ceteareth-25 Methacrylate/Methacrylamide Crosspolymer safe for most people?
Acrylates/Ceteareth-25 Methacrylate/Methacrylamide Crosspolymer is considered safe for topical use. It has low irritation and comedogenic potential, making it suitable for most skin types, including sensitive skin.
Who should be careful with Acrylates/Ceteareth-25 Methacrylate/Methacrylamide Crosspolymer?
Those who strictly avoid synthetic ingredients in their routine
Research sources
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.