Ingredient review
Tridecan-2-One
INCI: TRIDECAN-2-ONE
Tridecan-2-One is a synthetic fragrance ingredient with a low irritation risk, but it offers no skincare benefits beyond scent.
In plain English
Tridecan-2-One is a man-made chemical that smells pleasant and is added to products like lotions and perfumes to give them a nice scent. It doesn't moisturize, treat, or improve your skin in any way—it's purely for fragrance. While it's generally considered safe at the tiny amounts used, some people with very sensitive skin may still find it irritating.
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
Tridecan-2-One 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 Tridecan-2-One.
- 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
Tridecan-2-One is a synthetic ketone compound used as a fragrance ingredient. It is not a natural extract but is manufactured in a lab to provide a consistent, pleasant scent.
How it works
In a cosmetic product, Tridecan-2-One works by evaporating from the skin and interacting with olfactory receptors in your nose, creating a perception of a specific scent. It does not actively change the skin's structure or function.
Pros
Low irritation risk
At typical use levels, Tridecan-2-One has a low potential to cause skin irritation, making it suitable for most people.
Consistent scent
Being synthetic, it provides a uniform and predictable fragrance experience batch after batch, unlike some natural extracts that can vary.
Cons and cautions
No skincare benefit
This ingredient adds only scent to your product; it does not hydrate, soothe, or protect your skin.
Potential allergen
Even though irritation risk is low, fragrance ingredients are among the most common allergens in cosmetics, so sensitive individuals should patch test.
Best for
- Anyone who enjoys scented skincare products
- People without fragrance sensitivities
Use caution if
- Individuals with known fragrance allergies or extremely sensitive skin
Usage tips
Safety summary
Tridecan-2-One is considered safe for use in cosmetics at low concentrations. It has a low irritation and comedogenic risk, but like all fragrance ingredients, it can be a contact allergen for some individuals.
Research notes
Research on Tridecan-2-One is limited to its use as a fragrance. Safety assessments by industry panels (e.g., IFRA, RIFM) have concluded it is safe at current use levels, but no studies show any therapeutic or skincare benefits.
Common label clues
- Typical concentration
- Typically used at very low concentrations, often below 1%
- Regulatory status
- Approved for use in cosmetics by the FDA and EU CosIng database, subject to concentration limits and labeling requirements for fragrance allergens.
- Common uses
- Fragranced products, Perfumes, Body lotions, Cleansers
- Environmental note
- As a synthetic compound, its environmental persistence and bioaccumulation potential are not well-documented, but it is used in very small amounts.
Good to know
- Tridecan-2-One is listed on ingredient labels simply as 'Fragrance' or 'Parfum' in many regions, so you may not see its specific name.
- The International Fragrance Association (IFRA) sets safety standards for fragrance ingredients, including Tridecan-2-One.
Common questions
What is Tridecan-2-One in beauty products?
Tridecan-2-One is a man-made chemical that smells pleasant and is added to products like lotions and perfumes to give them a nice scent. It doesn't moisturize, treat, or improve your skin in any way—it's purely for fragrance. While it's generally considered safe at the tiny amounts used, some people with very sensitive skin may still find it irritating.
What does Tridecan-2-One do in a beauty product?
In a cosmetic product, Tridecan-2-One works by evaporating from the skin and interacting with olfactory receptors in your nose, creating a perception of a specific scent. It does not actively change the skin's structure or function.
Is Tridecan-2-One safe for most people?
Tridecan-2-One is considered safe for use in cosmetics at low concentrations. It has a low irritation and comedogenic risk, but like all fragrance ingredients, it can be a contact allergen for some individuals.
Who should be careful with Tridecan-2-One?
Individuals with known fragrance allergies or extremely 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.