Ingredient review
Trans-2-Hexenyl Valerate
INCI: TRANS-2-HEXENYL VALERATE
A synthetic fragrance ester that adds a green, fruity scent; generally safe at low concentrations but offers no skincare benefit.
In plain English
Trans-2-Hexenyl Valerate is a man-made ingredient that smells like fresh green leaves or unripe fruit. It is added to products like lotions and perfumes just for its scent. It does not moisturize, treat, or change your skin in any way. Because it is a fragrance, it can sometimes cause irritation or allergic reactions in people with sensitive skin, but for most people it is safe in the tiny amounts used.
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 Valerate 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 Valerate.
- 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
Trans-2-Hexenyl Valerate is a synthetic ester formed by combining trans-2-hexenol (a green-leaf alcohol) with valeric acid. It belongs to a class of compounds used to create fruity, green, or herbal notes in fragrances.
How it works
In a cosmetic product, this ingredient simply evaporates from the skin's surface, releasing its scent molecules into the air. It does not interact with the skin's biology or provide any functional benefit beyond fragrance.
Pros
Pleasant scent profile
Adds a natural-smelling green, leafy, or fruity note that many people find refreshing and appealing in lotions, cleansers, and perfumes.
Low irritation for most
At the very low concentrations used in cosmetics, it rarely causes problems for people without fragrance sensitivities.
Cons and cautions
No skin benefit
This ingredient is purely for scent. It does not moisturize, soothe, protect, or improve the skin in any way.
Potential allergen
As a fragrance ingredient, it can trigger allergic contact dermatitis in sensitive individuals, leading to redness, itching, or rash.
Best for
- People who enjoy scented skincare and have no history of fragrance allergies
- Those looking for a fresh, green scent in their products
Use caution if
- Individuals with known fragrance allergies or very sensitive skin
Usage tips
Safety summary
Trans-2-Hexenyl Valerate is considered safe for use in cosmetics at typical low concentrations by major regulatory bodies. The main risk is skin sensitization in susceptible individuals, which is uncommon but possible.
Research notes
Research on this specific ester is limited, but it is structurally similar to other fragrance esters that have been evaluated by the Research Institute for Fragrance Materials (RIFM) and found safe for use within established limits.
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 countries. In the EU, it must be listed on the label if present above certain thresholds due to potential allergenicity.
- Common uses
- Fragranced skincare, Perfumes, Body lotions, Cleansers
- Environmental note
- As a synthetic compound, its environmental persistence is low; it is expected to biodegrade relatively quickly.
Good to know
- Trans-2-Hexenyl Valerate is also known as (E)-2-hexenyl valerate and is listed under fragrance allergen regulations in some regions.
- Fragrance ingredients are often proprietary blends, so the exact amount in a product is rarely disclosed.
Common questions
What is Trans-2-Hexenyl Valerate in beauty products?
Trans-2-Hexenyl Valerate is a man-made ingredient that smells like fresh green leaves or unripe fruit. It is added to products like lotions and perfumes just for its scent. It does not moisturize, treat, or change your skin in any way. Because it is a fragrance, it can sometimes cause irritation or allergic reactions in people with sensitive skin, but for most people it is safe in the tiny amounts used.
What does Trans-2-Hexenyl Valerate do in a beauty product?
In a cosmetic product, this ingredient simply evaporates from the skin's surface, releasing its scent molecules into the air. It does not interact with the skin's biology or provide any functional benefit beyond fragrance.
Is Trans-2-Hexenyl Valerate safe for most people?
Trans-2-Hexenyl Valerate is considered safe for use in cosmetics at typical low concentrations by major regulatory bodies. The main risk is skin sensitization in susceptible individuals, which is uncommon but possible.
Who should be careful with Trans-2-Hexenyl Valerate?
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.