Ingredient review
Ethyl 2-Methyl-4-Oxo-6-Pentylcyclohex-2-Enecarboxylate
INCI: ETHYL 2-METHYL-4-OXO-6-PENTYLCYCLOHEX-2-ENECARBOXYLATE
A synthetic fragrance ingredient that adds scent but offers no skin benefit; generally safe at low levels but may cause sensitivity in some individuals.
In plain English
This is a man-made chemical used to give a specific smell to skincare and beauty products. It doesn't moisturize, protect, or treat the skin—it's purely for fragrance. While it's considered safe in tiny amounts, people with sensitive skin or fragrance allergies might want to avoid it.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is still emerging, so marketing claims deserve extra caution.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Ethyl 2-Methyl-4-Oxo-6-Pentylcyclohex-2-Enecarboxylate 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 Ethyl 2-Methyl-4-Oxo-6-Pentylcyclohex-2-Enecarboxylate.
- 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
emergingThe ingredient may be promising, but claims should be treated more cautiously.
What it is
A synthetic ester compound designed to produce a particular aroma in cosmetic formulations. It belongs to a class of fragrance ingredients that are added in very small amounts to enhance the sensory experience of a product.
How it works
It evaporates from the skin's surface, releasing scent molecules that are detected by the nose. It does not interact with the skin's biology or provide any functional skincare benefit beyond fragrance.
Pros
Pleasant scent
Adds a desirable fragrance that can make the product more enjoyable to use.
Low irritation risk
At typical low concentrations, it is unlikely to cause irritation for most people.
Cons and cautions
No skin benefit
This ingredient only provides scent and does not hydrate, protect, or improve skin health.
Potential allergen
Fragrance ingredients are common allergens; this compound may trigger reactions in sensitive individuals.
Best for
- People who enjoy scented skincare and have no history of fragrance allergies
- Those looking for a pleasant sensory experience in their routine
Use caution if
- Individuals with known fragrance allergies or sensitive, reactive skin
- Anyone following a fragrance-free skincare routine for medical or personal reasons
Usage tips
Safety summary
Generally recognized as safe at the low concentrations used in cosmetics. However, like all fragrance ingredients, it can cause allergic contact dermatitis in susceptible individuals.
Research notes
Limited peer-reviewed research specifically on this compound. Safety assessments rely on general fragrance ingredient guidelines and industry standards.
Common label clues
- Typical concentration
- Very low, often less than 0.1% in leave-on products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets, subject to concentration limits set by the International Fragrance Association (IFRA).
- Common uses
- Fragranced products, Perfumes, Body lotions, Cleansers
- Environmental note
- As a synthetic compound, its environmental persistence and bioaccumulation potential are not well-documented; minimal impact at low use levels.
Good to know
- Fragrance ingredients are often listed simply as 'fragrance' or 'parfum' on labels, so this specific compound may not always appear by name.
- Regulatory bodies like the IFRA set safe usage limits for fragrance ingredients in cosmetics.
Common questions
What is Ethyl 2-Methyl-4-Oxo-6-Pentylcyclohex-2-Enecarboxylate in beauty products?
This is a man-made chemical used to give a specific smell to skincare and beauty products. It doesn't moisturize, protect, or treat the skin—it's purely for fragrance. While it's considered safe in tiny amounts, people with sensitive skin or fragrance allergies might want to avoid it.
What does Ethyl 2-Methyl-4-Oxo-6-Pentylcyclohex-2-Enecarboxylate do in a beauty product?
It evaporates from the skin's surface, releasing scent molecules that are detected by the nose. It does not interact with the skin's biology or provide any functional skincare benefit beyond fragrance.
Is Ethyl 2-Methyl-4-Oxo-6-Pentylcyclohex-2-Enecarboxylate safe for most people?
Generally recognized as safe at the low concentrations used in cosmetics. However, like all fragrance ingredients, it can cause allergic contact dermatitis in susceptible individuals.
Who should be careful with Ethyl 2-Methyl-4-Oxo-6-Pentylcyclohex-2-Enecarboxylate?
Individuals with known fragrance allergies or sensitive, reactive skin Anyone following a fragrance-free skincare routine for medical or personal reasons
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.