Ingredient review
Trans-2-Hexenyl Phenylacetate
INCI: TRANS-2-HEXENYL PHENYLACETATE
A synthetic scent ingredient that adds a pleasant floral-fruity note but offers no skincare benefits and may cause sensitivity in some people.
In plain English
Trans-2-Hexenyl Phenylacetate is a man-made chemical added to cosmetics and skincare products to give them a sweet, floral, or fruity smell. It doesn't help your skin or hair in any way—it's purely for fragrance. While generally considered safe at low levels, it can be a potential irritant for those with sensitive skin or fragrance allergies.
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
Trans-2-Hexenyl Phenylacetate 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 Trans-2-Hexenyl Phenylacetate.
- 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 compound produced by reacting trans-2-hexenol with phenylacetic acid. It is used exclusively as a fragrance ingredient in cosmetics and personal care products.
How it works
It evaporates from the product's surface, releasing aromatic molecules that are detected by the nose. It does not interact with the skin's biology or provide any functional benefit beyond scent.
Pros
Pleasant scent
Adds a sweet, floral-fruity aroma that can make the product more enjoyable to use.
Low irritation risk for most
At typical low concentrations, it is unlikely to cause irritation in people without fragrance sensitivities.
Cons and cautions
No skin benefit
This ingredient does not moisturize, protect, or improve skin health—it only adds smell.
Potential allergen
Fragrance ingredients are common allergens; this compound may cause contact dermatitis in sensitive individuals.
Best for
- People who enjoy scented skincare and have no history of fragrance allergies
- Those using products where fragrance is a desired feature
Use caution if
- Individuals with known fragrance allergies or very sensitive skin
- Anyone preferring fragrance-free or hypoallergenic products
Usage tips
Safety summary
Generally recognized as safe for use in cosmetics at low concentrations by major regulatory bodies, but it is a known potential allergen and should be avoided by those with fragrance sensitivities.
Research notes
Limited peer-reviewed research specifically on trans-2-hexenyl phenylacetate, but fragrance ingredients as a class are well-studied for allergenicity. The Research Institute for Fragrance Materials (RIFM) has evaluated it and found it safe at typical use levels.
Common label clues
- Typical concentration
- Typically used at very low levels (under 1%) in finished products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions, subject to concentration limits and labeling requirements for allergens.
- Common uses
- Fragranced skincare, Perfumes, Body lotions, Hair products
- Environmental note
- As a synthetic compound, its environmental persistence and biodegradability are not well-documented, but it is used in very small amounts.
Good to know
- Trans-2-Hexenyl Phenylacetate is not a naturally occurring ingredient in most plants; it is synthesized in a lab.
- Fragrance ingredients are often listed simply as 'fragrance' or 'parfum' on labels, so you may not see this specific name.
Common questions
What is Trans-2-Hexenyl Phenylacetate in beauty products?
Trans-2-Hexenyl Phenylacetate is a man-made chemical added to cosmetics and skincare products to give them a sweet, floral, or fruity smell. It doesn't help your skin or hair in any way—it's purely for fragrance. While generally considered safe at low levels, it can be a potential irritant for those with sensitive skin or fragrance allergies.
What does Trans-2-Hexenyl Phenylacetate do in a beauty product?
It evaporates from the product's surface, releasing aromatic molecules that are detected by the nose. It does not interact with the skin's biology or provide any functional benefit beyond scent.
Is Trans-2-Hexenyl Phenylacetate safe for most people?
Generally recognized as safe for use in cosmetics at low concentrations by major regulatory bodies, but it is a known potential allergen and should be avoided by those with fragrance sensitivities.
Who should be careful with Trans-2-Hexenyl Phenylacetate?
Individuals with known fragrance allergies or very sensitive skin Anyone preferring fragrance-free or hypoallergenic products
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.