Ingredient review
Ethylenediamine/Hydrogenated Dimer Dilinoleate Copolymer Bis-Di-C14-18 Alkyl Amide
INCI: ETHYLENEDIAMINE/HYDROGENATED DIMER DILINOLEATE COPOLYMER BIS-DI-C14-18 ALKYL AMIDE
A synthetic polymer that helps skincare and makeup stay put longer, especially in water-resistant formulas.
In plain English
This is a man-made ingredient that forms a thin, flexible film on your skin. It helps other ingredients—like sunscreen filters or pigments—stay in place and resist water, sweat, and rubbing. Think of it as a gentle, invisible shield that keeps your product working longer without feeling heavy or sticky.
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
Ethylenediamine/Hydrogenated Dimer Dilinoleate Copolymer Bis-Di-C14-18 Alkyl Amide 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 Ethylenediamine/Hydrogenated Dimer Dilinoleate Copolymer Bis-Di-C14-18 Alkyl Amide.
- 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 copolymer derived from ethylenediamine and hydrogenated dimer dilinoleate, modified with long-chain alkyl amides. It is designed to create a flexible, water-resistant film on the skin or hair.
How it works
When applied, the polymer molecules link together to form a continuous, breathable film. This film physically locks in active ingredients (like UV filters or pigments) and reduces their transfer or wash-off. It also adds a slight thickening effect to the product texture.
Pros
Boosts water resistance
Helps sunscreens and makeup stay effective even when you sweat or swim, so you don't have to reapply as often.
Lightweight feel
Unlike older film-formers, this polymer creates a flexible film that doesn't feel stiff or mask-like on the skin.
Cons and cautions
Requires thorough removal
Because it's water-resistant, you'll likely need an oil-based cleanser or micellar water to fully remove it, which can be an extra step in your routine.
Environmental persistence
As a synthetic polymer, it is not biodegradable and may accumulate in the environment, which is a concern for eco-conscious consumers.
Best for
- People who want long-lasting, water-resistant sunscreens or makeup
- Those with oily skin who prefer products that stay matte and don't slide off
Use caution if
- Individuals who prefer minimal, easily removable products and dislike double-cleansing routines
Usage tips
Safety summary
Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic potential. No significant systemic absorption expected. Standard cosmetic safety assessments support its use.
Research notes
Limited peer-reviewed studies specific to this exact polymer, but film-forming polymers as a class are well-studied for safety and efficacy. Regulatory reviews (e.g., CIR) have found similar polymers safe at typical use levels.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. No specific concentration restrictions, but formulators follow good manufacturing practices.
- Common uses
- Sunscreens, Long-wear foundations, Waterproof mascaras, Lip products
- Environmental note
- As a synthetic polymer, it is not biodegradable. Some jurisdictions are reviewing microplastic regulations that may affect its future use.
Good to know
- This ingredient is often found in 'water-resistant' or 'long-wear' labeled products.
- It is considered safe for use in cosmetics by major regulatory bodies when used within typical concentrations.
Common questions
What is Ethylenediamine/Hydrogenated Dimer Dilinoleate Copolymer Bis-Di-C14-18 Alkyl Amide in beauty products?
This is a man-made ingredient that forms a thin, flexible film on your skin. It helps other ingredients—like sunscreen filters or pigments—stay in place and resist water, sweat, and rubbing. Think of it as a gentle, invisible shield that keeps your product working longer without feeling heavy or sticky.
What does Ethylenediamine/Hydrogenated Dimer Dilinoleate Copolymer Bis-Di-C14-18 Alkyl Amide do in a beauty product?
When applied, the polymer molecules link together to form a continuous, breathable film. This film physically locks in active ingredients (like UV filters or pigments) and reduces their transfer or wash-off. It also adds a slight thickening effect to the product texture.
Is Ethylenediamine/Hydrogenated Dimer Dilinoleate Copolymer Bis-Di-C14-18 Alkyl Amide safe for most people?
Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic potential. No significant systemic absorption expected. Standard cosmetic safety assessments support its use.
Who should be careful with Ethylenediamine/Hydrogenated Dimer Dilinoleate Copolymer Bis-Di-C14-18 Alkyl Amide?
Individuals who prefer minimal, easily removable products and dislike double-cleansing routines
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.