Ingredient review
Dimethylacrylamide
INCI: Dimethylacrylamide
A synthetic film-former that helps products spread smoothly and feel lightweight, but its safety data is limited to general polymer use.
In plain English
Dimethylacrylamide is a man-made ingredient that forms a thin, flexible film on your skin or hair. It helps lotions and serums spread easily, feel silky, and stay put without being sticky. Think of it like a very light, invisible glove that holds other ingredients in place.
Review score
Safety, usefulness, and evidence
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
Quick decision guide
Useful, but context matters
Dimethylacrylamide 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 Dimethylacrylamide.
- 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 polymer derived from acrylic acid, used in cosmetics to create a film on the skin or hair. It is often part of a larger polymer complex (e.g., with acrylates) to improve texture and wear.
How it works
When applied, the polymer chains link together as the water evaporates, forming a continuous, breathable film. This film smooths the skin's surface, reduces water loss, and helps other ingredients stay on the skin longer.
Pros
Lightweight feel
Creates a silky, non-sticky finish that many people prefer over heavier oils or waxes.
Improves product performance
Helps serums and sunscreens spread evenly and stay effective longer, especially in water-resistant formulas.
Cons and cautions
Synthetic origin
Made from petrochemicals, which may be a concern for those seeking natural or eco-friendly products.
Limited safety data
While generally considered safe at low levels, there are fewer long-term studies on this specific polymer compared to more common ingredients like glycerin.
Best for
- People who want a lightweight, non-greasy finish
- Those using water-resistant sunscreens or long-wear makeup
Use caution if
- Individuals with known acrylate allergies (rare)
- Those seeking 100% natural or organic formulations
Usage tips
Safety summary
Generally recognized as safe for topical use in cosmetics at low concentrations. The Cosmetic Ingredient Review (CIR) panel has reviewed related acrylate polymers and found them safe as used. However, individual sensitivity is possible.
Research notes
Most safety data comes from studies on acrylate copolymers as a class. Direct studies on dimethylacrylamide alone are sparse, but no significant toxicity or irritation has been reported in cosmetic use.
Common label clues
- Typical concentration
- Typically 0.1% to 5% in leave-on and rinse-off products
- Regulatory status
- Approved for use in cosmetics in the US (FDA) and EU (CosIng) at typical concentrations. Not classified as a restricted ingredient.
- Common uses
- Serums, Moisturizers, Sunscreens, Hair styling products
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is used in very small amounts and is not known to bioaccumulate.
Good to know
- Often listed as part of a copolymer (e.g., 'Acrylates/Dimethylacrylamide Copolymer') on ingredient labels.
- Not the same as acrylamide, a known neurotoxin; dimethylacrylamide is a different molecule with a different safety profile.
Common questions
What is Dimethylacrylamide in beauty products?
Dimethylacrylamide is a man-made ingredient that forms a thin, flexible film on your skin or hair. It helps lotions and serums spread easily, feel silky, and stay put without being sticky. Think of it like a very light, invisible glove that holds other ingredients in place.
What does Dimethylacrylamide do in a beauty product?
When applied, the polymer chains link together as the water evaporates, forming a continuous, breathable film. This film smooths the skin's surface, reduces water loss, and helps other ingredients stay on the skin longer.
Is Dimethylacrylamide safe for most people?
Generally recognized as safe for topical use in cosmetics at low concentrations. The Cosmetic Ingredient Review (CIR) panel has reviewed related acrylate polymers and found them safe as used. However, individual sensitivity is possible.
Who should be careful with Dimethylacrylamide?
Individuals with known acrylate allergies (rare) Those seeking 100% natural or organic formulations
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.