Ingredient review
Butenylidene Trimethylcyclohexenone
INCI: BUTENYLIDENE-TRIMETHYLCYCLOHEXENONE
A synthetic fragrance compound that adds a warm, woody scent; generally considered safe at low levels but offers no skincare benefit.
In plain English
This is a man-made chemical that gives products a pleasant, warm, woody smell. It doesn't moisturize, treat, or improve your skin in any way—it's purely there for fragrance. Because it's a fragrance ingredient, it can be a potential irritant for people with sensitive skin or fragrance allergies, but at the tiny amounts used in cosmetics, it's considered safe for most people.
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
Butenylidene Trimethylcyclohexenone 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 Butenylidene Trimethylcyclohexenone.
- 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 organic compound belonging to the cyclohexenone family, used exclusively as a fragrance ingredient in cosmetics and personal care products.
How it works
It works by binding to olfactory receptors in the nose, creating the perception of a warm, woody scent. In a product, it simply adds fragrance and has no active effect on the skin's structure or function.
Pros
Pleasant scent
Adds a warm, woody note that many people find appealing in lotions, cleansers, and perfumes.
Low irritation risk for most
At typical low concentrations, it is not a common irritant for the general population.
Cons and cautions
No skincare benefit
This ingredient does not hydrate, protect, or improve skin health—it only provides fragrance.
Potential allergen
As a fragrance ingredient, it can cause allergic reactions or irritation in people with sensitive skin or fragrance sensitivities.
Best for
- People who enjoy scented skincare products
- Those without known fragrance allergies
Use caution if
- Individuals with sensitive skin or a known allergy to fragrance ingredients
Usage tips
Safety summary
Generally recognized as safe for use in cosmetics at low concentrations by industry safety panels, but may cause irritation in fragrance-sensitive individuals.
Research notes
Limited published research on this specific compound; safety assessments rely on general fragrance ingredient evaluations and IFRA standards.
Common label clues
- Typical concentration
- Typically used at very low levels, often less than 1% in leave-on products.
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other countries, subject to IFRA safety guidelines and concentration limits.
- Common uses
- Fragranced skincare, Perfumes, Body lotions, Cleansers
- Environmental note
- As a synthetic compound, its environmental persistence and bioaccumulation potential are not well-studied, but it is used in very small amounts.
Good to know
- Fragrance ingredients like this one are often listed simply as 'fragrance' or 'parfum' on labels, so you may not see this specific name.
- Regulatory bodies like the International Fragrance Association (IFRA) set safety standards for its use in cosmetics.
Common questions
What is Butenylidene Trimethylcyclohexenone in beauty products?
This is a man-made chemical that gives products a pleasant, warm, woody smell. It doesn't moisturize, treat, or improve your skin in any way—it's purely there for fragrance. Because it's a fragrance ingredient, it can be a potential irritant for people with sensitive skin or fragrance allergies, but at the tiny amounts used in cosmetics, it's considered safe for most people.
What does Butenylidene Trimethylcyclohexenone do in a beauty product?
It works by binding to olfactory receptors in the nose, creating the perception of a warm, woody scent. In a product, it simply adds fragrance and has no active effect on the skin's structure or function.
Is Butenylidene Trimethylcyclohexenone safe for most people?
Generally recognized as safe for use in cosmetics at low concentrations by industry safety panels, but may cause irritation in fragrance-sensitive individuals.
Who should be careful with Butenylidene Trimethylcyclohexenone?
Individuals with sensitive skin or a known allergy to fragrance ingredients
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.