Ingredient review
Trans-2-Hexenyl Hexanoate
INCI: TRANS-2-HEXENYL HEXANOATE
A synthetic fragrance ester that adds a fruity, green note to products; generally considered safe at low concentrations but offers no skincare benefits.
In plain English
Trans-2-Hexenyl Hexanoate is a man-made ingredient that smells fruity and green, like fresh leaves or unripe fruit. It is added to cosmetics and skincare products purely for its pleasant scent. It does not moisturize, treat, or improve the skin in any way. Because it is used in tiny amounts, it is unlikely to cause problems for most people, but those with very sensitive skin or fragrance allergies may want to avoid it.
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 Hexanoate 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 Hexanoate.
- 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 formed from trans-2-hexenol (a green-leaf alcohol) and hexanoic acid (a fatty acid). It is a colorless liquid with a strong, fruity-green odor.
How it works
It functions solely as a fragrance ingredient. When added to a product, it evaporates from the skin's surface, releasing its scent. It does not interact with the skin's biology or provide any active skincare benefit.
Pros
Pleasant scent
Adds a fresh, natural-smelling green note that many people find appealing in lotions and cleansers.
Low irritation potential
At the very low concentrations used in cosmetics, it rarely causes irritation for the general population.
Cons and cautions
No skincare benefit
This ingredient is purely for fragrance and does not hydrate, soothe, or improve the skin in any way.
Potential allergen
Like many fragrance ingredients, it can trigger allergic reactions or contact dermatitis in sensitive individuals, especially with repeated use.
Best for
- People who enjoy scented skincare products
- Those without fragrance allergies or sensitivities
Use caution if
- Individuals with known fragrance allergies or very sensitive skin
Usage tips
Safety summary
Trans-2-Hexenyl Hexanoate is considered safe for use in cosmetics at the low concentrations typically employed. The International Fragrance Association (IFRA) has set usage standards to minimize skin sensitization risk. However, like all fragrance ingredients, it can cause allergic reactions in susceptible individuals.
Research notes
Safety assessments are based on its structural similarity to other esters and its low dermal absorption. No significant toxicity or irritation has been reported in standard tests at cosmetic use levels. Research is limited to fragrance safety evaluations rather than skincare efficacy.
Common label clues
- Typical concentration
- Typically used at very low levels, often below 1% in leave-on products.
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. It is subject to fragrance allergen labeling requirements in the EU if present above certain thresholds.
- Common uses
- Fragranced skincare, Perfumes, Body lotions, Hair products
- Environmental note
- As a synthetic compound, its environmental impact is minimal at the low volumes used in cosmetics. It is not known to be bioaccumulative.
Good to know
- Trans-2-Hexenyl Hexanoate is often listed simply as 'fragrance' or 'parfum' on ingredient labels, so it may not appear by name.
- It is considered a 'green note' in perfumery, mimicking the smell of freshly cut grass or leaves.
Common questions
What is Trans-2-Hexenyl Hexanoate in beauty products?
Trans-2-Hexenyl Hexanoate is a man-made ingredient that smells fruity and green, like fresh leaves or unripe fruit. It is added to cosmetics and skincare products purely for its pleasant scent. It does not moisturize, treat, or improve the skin in any way. Because it is used in tiny amounts, it is unlikely to cause problems for most people, but those with very sensitive skin or fragrance allergies may want to avoid it.
What does Trans-2-Hexenyl Hexanoate do in a beauty product?
It functions solely as a fragrance ingredient. When added to a product, it evaporates from the skin's surface, releasing its scent. It does not interact with the skin's biology or provide any active skincare benefit.
Is Trans-2-Hexenyl Hexanoate safe for most people?
Trans-2-Hexenyl Hexanoate is considered safe for use in cosmetics at the low concentrations typically employed. The International Fragrance Association (IFRA) has set usage standards to minimize skin sensitization risk. However, like all fragrance ingredients, it can cause allergic reactions in susceptible individuals.
Who should be careful with Trans-2-Hexenyl Hexanoate?
Individuals with known fragrance allergies or very sensitive skin
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.