Ingredient review
Rapeseed/Tung Oil Copolymer
INCI: BRASSICA CAMPESTRIS/ALEURITES FORDI OIL COPOLYMER
A plant-derived film former that helps makeup and sunscreen stay put longer without feeling heavy or sticky.
In plain English
This ingredient is a polymer made by chemically linking oils from rapeseed (canola) and tung trees. In cosmetics, it creates a thin, flexible film on skin or hair. That film helps other ingredients—like pigments or sunscreen filters—adhere better and resist water, sweat, or rubbing. Unlike some older film formers that felt stiff or plasticky, this one is known for a more natural, comfortable feel. It's especially popular in lip products and long-wear face makeup because it improves staying power without drying out the skin.
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
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Rapeseed/Tung Oil Copolymer 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 Rapeseed/Tung Oil Copolymer.
- 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 semi-synthetic copolymer created by reacting rapeseed oil (from Brassica campestris) with tung oil (from Aleurites fordii). The result is a flexible, water-resistant film-forming agent used in cosmetics.
How it works
When applied, the copolymer molecules spread into a thin, even layer and then link together as the solvent evaporates, forming a flexible film. This film physically locks in pigments or active ingredients, slows water loss from the product, and resists being washed away by water or sweat.
Pros
Long-wear without stiffness
Creates a flexible film that moves with your skin, so makeup doesn't crack or feel tight.
Plant-derived alternative
Made from renewable rapeseed and tung oils, offering a more natural option compared to fully synthetic film formers.
Cons and cautions
Potential tackiness at high levels
In some formulas, especially lip glosses, a high concentration can leave a slightly sticky feel.
Limited solubility
Works best in oil-based or emulsion formulas; not ideal for simple water-based gels.
Best for
- Anyone wanting longer-lasting lip color or foundation
- People who prefer plant-derived ingredients over purely synthetic film formers
Use caution if
- Those with known allergies to rapeseed or tung oil (rare)
- People who prefer completely water-based, film-free formulas
Usage tips
Safety summary
Generally recognized as safe for topical cosmetic use. Low irritation and comedogenic potential. Rare allergic reactions possible in individuals sensitive to the source oils.
Research notes
Safety data is primarily based on analog studies of similar oil-based copolymers and general polymer toxicology. No specific human or animal studies were found for this exact ingredient, but its widespread use and low reported irritation support its safety profile.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Lipsticks, Lip glosses, Water-resistant sunscreens, Long-wear foundations, Hair styling products
- Environmental note
- Derived from renewable plant oils (rapeseed and tung). The copolymer is not known to bioaccumulate and is considered more biodegradable than many synthetic alternatives.
Good to know
- This copolymer is often used as a replacement for older film formers like polyvinylpyrrolidone (PVP) because it feels more natural on skin.
- It is considered biodegradable and has a lower environmental impact than some petroleum-based film formers.
Common questions
What is Rapeseed/Tung Oil Copolymer in beauty products?
This ingredient is a polymer made by chemically linking oils from rapeseed (canola) and tung trees. In cosmetics, it creates a thin, flexible film on skin or hair. That film helps other ingredients—like pigments or sunscreen filters—adhere better and resist water, sweat, or rubbing. Unlike some older film formers that felt stiff or plasticky, this one is known for a more natural, comfortable feel. It's especially popular in lip products and long-wear face makeup because it improves staying power without drying out the skin.
What does Rapeseed/Tung Oil Copolymer do in a beauty product?
When applied, the copolymer molecules spread into a thin, even layer and then link together as the solvent evaporates, forming a flexible film. This film physically locks in pigments or active ingredients, slows water loss from the product, and resists being washed away by water or sweat.
Is Rapeseed/Tung Oil Copolymer safe for most people?
Generally recognized as safe for topical cosmetic use. Low irritation and comedogenic potential. Rare allergic reactions possible in individuals sensitive to the source oils.
Who should be careful with Rapeseed/Tung Oil Copolymer?
Those with known allergies to rapeseed or tung oil (rare) People who prefer completely water-based, film-free formulas
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.