Ingredient review
Trimethylol Propane Cyclohexene Dicarboxylate
INCI: Trimethylol Propane Cyclohexene Dicarboxylate
A synthetic film-former that improves product feel and wear without common irritation concerns.
In plain English
This ingredient is a man-made polymer that forms a thin, flexible film on the skin. It helps other ingredients spread evenly and makes the product feel silky and lightweight. You'll often find it in sunscreens and makeup to improve texture and help the product stay put without feeling sticky or heavy.
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
Trimethylol Propane Cyclohexene Dicarboxylate 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 Trimethylol Propane Cyclohexene Dicarboxylate.
- 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 ester derived from trimethylolpropane and cyclohexene dicarboxylic acid. It is a clear, viscous liquid used primarily as a film-forming agent in cosmetics.
How it works
When applied, it dries down to form a uniform, flexible film on the skin's surface. This film helps distribute other ingredients evenly, reduces the greasy feel of oils, and can improve the water resistance of sunscreens and makeup.
Pros
Improves product feel
Creates a silky, lightweight texture that helps serums and sunscreens glide on smoothly without stickiness.
Boosts water resistance
Forms a flexible film that can help sunscreens and makeup last longer, especially in humid conditions.
Cons and cautions
Synthetic origin
Made from petrochemical derivatives, which may be a concern for those seeking natural or eco-friendly products.
Limited long-term data
While generally considered safe, there are fewer long-term studies on this ingredient compared to more common film-formers.
Best for
- Anyone looking for a lightweight, non-greasy finish
- People who wear makeup or sunscreen and want better wear
Use caution if
- Those who strictly avoid synthetic ingredients
- Individuals with known sensitivity to film-forming polymers
Usage tips
Safety summary
Trimethylol Propane Cyclohexene Dicarboxylate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types.
Research notes
Research is limited but consistent with other film-forming polymers. No significant safety concerns have been raised by regulatory bodies. Most data comes from manufacturer safety assessments.
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 are common.
- Common uses
- Sunscreens, Foundations, Primers, Moisturizers
- Environmental note
- As a synthetic polymer, it may not be biodegradable. Check product labeling for environmental claims.
Good to know
- Often used in 'weightless' sunscreen formulas to reduce the heavy feel of traditional sunscreens.
- Can help minimize the white cast from mineral sunscreens by improving spreadability.
Common questions
What is Trimethylol Propane Cyclohexene Dicarboxylate in beauty products?
This ingredient is a man-made polymer that forms a thin, flexible film on the skin. It helps other ingredients spread evenly and makes the product feel silky and lightweight. You'll often find it in sunscreens and makeup to improve texture and help the product stay put without feeling sticky or heavy.
What does Trimethylol Propane Cyclohexene Dicarboxylate do in a beauty product?
When applied, it dries down to form a uniform, flexible film on the skin's surface. This film helps distribute other ingredients evenly, reduces the greasy feel of oils, and can improve the water resistance of sunscreens and makeup.
Is Trimethylol Propane Cyclohexene Dicarboxylate safe for most people?
Trimethylol Propane Cyclohexene Dicarboxylate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types.
Who should be careful with Trimethylol Propane Cyclohexene Dicarboxylate?
Those who strictly avoid synthetic ingredients Individuals with known sensitivity to film-forming polymers
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.