Ingredient review
Trimethylolpropane Tricaprylate/Tricaprate
INCI: TRIMETHYLOLPROPANE TRICAPRYLATE/TRICAPRATE
A lightweight, non-greasy emollient that helps products spread smoothly and leaves skin feeling soft without clogging pores.
In plain English
This ingredient is a synthetic oil-like substance made from natural fatty acids and a sugar alcohol. It is used in skincare and makeup to give a silky, smooth feel without being heavy or sticky. Unlike some natural oils, it spreads easily and absorbs quickly, making it a favorite for lightweight moisturizers and sunscreens. It also helps other ingredients mix together and stay stable.
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
Trimethylolpropane Tricaprylate/Tricaprate 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 Trimethylolpropane Tricaprylate/Tricaprate.
- 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
Trimethylolpropane Tricaprylate/Tricaprate is a synthetic ester created by combining trimethylolpropane (a sugar alcohol derivative) with caprylic and capric acids (medium-chain fatty acids from coconut or palm oil). It is a clear, odorless liquid oil that mimics the feel of natural emollients but with better stability and a lighter texture.
How it works
In a cosmetic product, this ingredient sits on the skin's surface to fill in tiny gaps between skin cells, making the skin feel smoother and softer. It also reduces friction, so products glide on easily. Because it is non-occlusive (does not form a heavy seal), it allows the skin to breathe while still providing moisture retention. It also helps dissolve other oil-soluble ingredients and improves the spreadability of formulas.
Pros
Lightweight texture
Unlike heavy oils, this ester absorbs quickly and leaves no sticky residue, making it ideal for daytime moisturizers and sunscreens.
Low pore-clogging risk
Rated low on the comedogenic scale, it is unlikely to cause breakouts, even for acne-prone skin.
Cons and cautions
Synthetic production
It is manufactured in a lab, which may be a turn-off for those seeking 100% natural or plant-derived ingredients.
Sustainability concerns
The fatty acids are often sourced from palm or coconut oil, which can have environmental impacts if not sustainably harvested.
Best for
- People with oily or combination skin who want lightweight moisture
- Anyone looking for a non-greasy sunscreen or makeup base
Use caution if
- Those who strictly avoid synthetic ingredients
- Individuals with known allergies to caprylic/capric acid derivatives (rare)
Usage tips
Safety summary
Trimethylolpropane Tricaprylate/Tricaprate is considered safe for use in cosmetics. It has low irritation and sensitization potential, and is not known to be toxic or carcinogenic. The Cosmetic Ingredient Review (CIR) panel has reviewed similar esters and found them safe as used.
Research notes
While specific studies on this exact ester are limited, the safety of related caprylic/capric acid esters is well-established. They are widely used in cosmetics and are generally recognized as safe by regulatory bodies. No significant adverse effects have been reported in clinical or consumer use.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics worldwide, including by the U.S. FDA and the European Commission. No known restrictions at typical concentrations.
- Common uses
- Moisturizers, Sunscreens, Foundations, Lip products, Serums
- Environmental note
- The caprylic and capric acids are typically derived from coconut or palm oil. Choosing products with sustainably sourced palm oil or certified organic coconut oil can reduce environmental impact.
Good to know
- This ingredient is often used as a replacement for silicone oils like dimethicone in 'silicone-free' products.
- It is stable and does not oxidize easily, giving products a longer shelf life.
Common questions
What is Trimethylolpropane Tricaprylate/Tricaprate in beauty products?
This ingredient is a synthetic oil-like substance made from natural fatty acids and a sugar alcohol. It is used in skincare and makeup to give a silky, smooth feel without being heavy or sticky. Unlike some natural oils, it spreads easily and absorbs quickly, making it a favorite for lightweight moisturizers and sunscreens. It also helps other ingredients mix together and stay stable.
What does Trimethylolpropane Tricaprylate/Tricaprate do in a beauty product?
In a cosmetic product, this ingredient sits on the skin's surface to fill in tiny gaps between skin cells, making the skin feel smoother and softer. It also reduces friction, so products glide on easily. Because it is non-occlusive (does not form a heavy seal), it allows the skin to breathe while still providing moisture retention. It also helps dissolve other oil-soluble ingredients and improves the spreadability of formulas.
Is Trimethylolpropane Tricaprylate/Tricaprate safe for most people?
Trimethylolpropane Tricaprylate/Tricaprate is considered safe for use in cosmetics. It has low irritation and sensitization potential, and is not known to be toxic or carcinogenic. The Cosmetic Ingredient Review (CIR) panel has reviewed similar esters and found them safe as used.
Who should be careful with Trimethylolpropane Tricaprylate/Tricaprate?
Those who strictly avoid synthetic ingredients Individuals with known allergies to caprylic/capric acid derivatives (rare)
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.