Ingredient review
Isopropyl Cyclohexadiene Acetaldehyde
INCI: ISOPROPYL-CYCLOHEXADIENE-ACETALDEHYDE
A synthetic fragrance ingredient that adds a fresh scent but may cause irritation in sensitive individuals.
In plain English
This is a man-made chemical added to skincare and beauty products to give them a pleasant, fresh, floral-like smell. It is not a moisturizer or active treatment ingredient—its only job is to make the product smell nice. Because it is a fragrance ingredient, it can sometimes cause skin reactions in people with sensitive skin or allergies.
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
Isopropyl Cyclohexadiene Acetaldehyde 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 Isopropyl Cyclohexadiene Acetaldehyde.
- 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 from the aldehyde family, specifically designed for use in fragrances. It is not found in nature and is created in a lab to produce a specific scent profile.
How it works
It works by evaporating from the skin and interacting with olfactory receptors in the nose, creating the perception of a fresh, floral scent. In the product, it simply adds fragrance and does not provide any skincare benefit like hydration or anti-aging.
Pros
Pleasant scent
Adds a fresh, floral aroma that can make your skincare routine more enjoyable.
Low comedogenic risk
Unlikely to clog pores, making it suitable for most skin types in terms of acne risk.
Cons and cautions
Potential irritant
As a synthetic fragrance, it can cause redness, itching, or stinging in people with sensitive skin or fragrance allergies.
No skincare benefit
This ingredient only provides scent—it does not moisturize, protect, or treat the skin in any way.
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 sensitive, reactive, or allergy-prone skin
- Anyone with a known fragrance allergy or contact dermatitis
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 irritant for sensitive individuals. The EU requires labeling of certain fragrance allergens, though this specific compound is not always individually listed.
Research notes
Research on this specific compound is limited, but synthetic fragrance aldehydes as a class are well-studied for their potential to cause contact dermatitis and allergic reactions. Regulatory bodies like the IFRA set usage limits to minimize risk.
Common label clues
- Typical concentration
- Typically used at very low levels (less than 1%) due to its strong scent profile.
- Regulatory status
- Approved for use in cosmetics in the EU and US, but must be listed on the label as a fragrance ingredient. Some individuals may develop allergies over time with repeated exposure.
- Common uses
- Fragranced skincare, Perfumes, Body lotions, Cleansers
- Environmental note
- As a synthetic compound, it may not be biodegradable and could accumulate in the environment. Natural fragrance alternatives may have a lower environmental footprint.
Good to know
- Fragrance ingredients like this are often listed simply as 'parfum' or 'fragrance' on labels, so check the full INCI list if you want to avoid specific compounds.
- This ingredient is not a preservative, antioxidant, or active—it is purely for scent.
Common questions
What is Isopropyl Cyclohexadiene Acetaldehyde in beauty products?
This is a man-made chemical added to skincare and beauty products to give them a pleasant, fresh, floral-like smell. It is not a moisturizer or active treatment ingredient—its only job is to make the product smell nice. Because it is a fragrance ingredient, it can sometimes cause skin reactions in people with sensitive skin or allergies.
What does Isopropyl Cyclohexadiene Acetaldehyde do in a beauty product?
It works by evaporating from the skin and interacting with olfactory receptors in the nose, creating the perception of a fresh, floral scent. In the product, it simply adds fragrance and does not provide any skincare benefit like hydration or anti-aging.
Is Isopropyl Cyclohexadiene Acetaldehyde 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 irritant for sensitive individuals. The EU requires labeling of certain fragrance allergens, though this specific compound is not always individually listed.
Who should be careful with Isopropyl Cyclohexadiene Acetaldehyde?
Individuals with sensitive, reactive, or allergy-prone skin Anyone with a known fragrance allergy or contact dermatitis
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.