Ingredient review
Tricyclodecylidene Butanal
INCI: TRICYCLODECYLIDENE BUTANAL
A synthetic fragrance compound that provides a pleasant woody-floral scent, but may cause irritation in sensitive individuals.
In plain English
Tricyclodecylidene Butanal is a man-made chemical added to skincare and beauty products to give them a specific scent, often described as woody or floral. It doesn't do anything for your skin's health—it's purely there for the smell. Because it's a fragrance ingredient, it can sometimes cause irritation or allergic reactions, especially if you have sensitive skin.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Main practical flags: irritation is moderate; clogging risk is low.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Tricyclodecylidene Butanal can be useful, but watch for some irritation potential.
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 Tricyclodecylidene Butanal.
- 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
moderateCan bother some users, especially with frequent use, damaged skin, or strong companion ingredients.
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 aldehyde family, used exclusively as a fragrance ingredient in cosmetics and personal care products.
How it works
It evaporates from the skin's surface, releasing scent molecules that are detected by the nose. It has no active skincare function like moisturizing or exfoliating.
Pros
Pleasant scent
Adds a sophisticated woody-floral aroma that many people find appealing in lotions, perfumes, and hair products.
Stable and long-lasting
Synthetic fragrance ingredients like this one are chemically stable and help maintain a consistent scent over the product's shelf life.
Cons and cautions
Potential irritant
Can cause redness, itching, or stinging on sensitive skin, especially in leave-on products like moisturizers.
No skincare benefit
Provides only fragrance—no moisturizing, anti-aging, or protective properties for the skin.
Best for
- People who enjoy scented skincare and have no history of fragrance allergies
- Those looking for a long-lasting, stable fragrance in their products
Use caution if
- Individuals with sensitive, reactive, or eczema-prone skin
- Anyone with a known allergy to synthetic fragrances or aldehydes
Usage tips
Safety summary
Generally considered safe for most people at the low concentrations used in cosmetics, but it is a known potential allergen and skin irritant. Those with fragrance sensitivities should avoid it.
Research notes
Research indicates that synthetic fragrance aldehydes like this one can cause contact dermatitis in susceptible individuals. The EU Scientific Committee on Consumer Safety (SCCS) has reviewed similar compounds and recommends labeling for allergens.
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 other major markets, but must be listed on the label as a fragrance ingredient. Some individuals may be allergic; patch testing is recommended.
- Common uses
- Fragranced skincare, Perfumes, Body lotions, Hair products
- Environmental note
- As a synthetic compound, it may not be biodegradable and could accumulate in the environment. Natural fragrance alternatives are available for eco-conscious consumers.
Good to know
- This ingredient is often listed near the end of an INCI list, indicating it's used at a low concentration.
- Fragrance allergens are required to be listed separately on product labels in many regions, so check for specific allergen names if you have known sensitivities.
Common questions
What is Tricyclodecylidene Butanal in beauty products?
Tricyclodecylidene Butanal is a man-made chemical added to skincare and beauty products to give them a specific scent, often described as woody or floral. It doesn't do anything for your skin's health—it's purely there for the smell. Because it's a fragrance ingredient, it can sometimes cause irritation or allergic reactions, especially if you have sensitive skin.
What does Tricyclodecylidene Butanal do in a beauty product?
It evaporates from the skin's surface, releasing scent molecules that are detected by the nose. It has no active skincare function like moisturizing or exfoliating.
Is Tricyclodecylidene Butanal safe for most people?
Generally considered safe for most people at the low concentrations used in cosmetics, but it is a known potential allergen and skin irritant. Those with fragrance sensitivities should avoid it.
Who should be careful with Tricyclodecylidene Butanal?
Individuals with sensitive, reactive, or eczema-prone skin Anyone with a known allergy to synthetic fragrances or aldehydes
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.