Ingredient review
Cinnamyl Isovalerate
INCI: Cinnamyl Isovalerate
Cinnamyl Isovalerate is a synthetic fragrance ingredient that adds a sweet, balsamic scent but may cause skin sensitivity in some people.
In plain English
Cinnamyl Isovalerate is a man-made chemical that smells like cinnamon and vanilla. It's added to products like lotions and perfumes to give them a pleasant scent. Because it's a fragrance ingredient, it can sometimes cause irritation or allergic reactions, especially on 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
Cinnamyl Isovalerate 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 Cinnamyl Isovalerate.
- 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
Cinnamyl Isovalerate is an ester formed from cinnamyl alcohol and isovaleric acid. It is a synthetic compound used almost exclusively as a fragrance ingredient in cosmetics and personal care items.
How it works
In a cosmetic product, Cinnamyl Isovalerate serves only as a fragrance component. It does not provide any skincare benefits like moisturizing or exfoliating. Its role is purely sensory—to impart a sweet, warm, balsamic scent to the product.
Pros
Pleasant scent
Adds a warm, sweet, balsamic fragrance that many people find appealing in lotions, perfumes, and body washes.
Low comedogenic risk
Unlikely to clog pores, making it a safer choice for those concerned about breakouts from scented products.
Cons and cautions
Potential irritant
As a fragrance ingredient, it can cause redness, itching, or stinging on sensitive skin, especially at higher concentrations.
Allergen risk
Cinnamyl Isovalerate is a known contact allergen and may trigger allergic reactions in susceptible individuals, leading to dermatitis.
Best for
- People who enjoy scented products and have no history of fragrance allergies
- Those with normal, non-sensitive skin looking for a pleasant scent experience
Use caution if
- Individuals with known fragrance allergies or sensitive skin prone to irritation
Usage tips
Safety summary
Cinnamyl Isovalerate is considered safe for most people when used at low concentrations in cosmetics. However, it is a known skin sensitizer and can cause allergic reactions in sensitive individuals. Regulatory bodies require labeling to alert consumers to its presence.
Research notes
Research indicates that Cinnamyl Isovalerate has moderate skin sensitization potential. It is included in fragrance allergen lists by the EU Scientific Committee on Consumer Safety (SCCS) and the International Fragrance Association (IFRA). Studies show it can cause contact dermatitis in patch tests.
Common label clues
- Typical concentration
- Typically used at very low concentrations (under 1%) in finished products
- Regulatory status
- Approved for use in cosmetics in the US and EU. In the EU, it is required to be listed on the label as a potential allergen when present above 0.001% in leave-on products or 0.01% in rinse-off products.
- Common uses
- Fragranced lotions, Perfumes, Body washes, Scented creams
- Environmental note
- As a synthetic compound, its environmental impact depends on manufacturing practices and biodegradability. Limited data is available on its ecological effects.
Good to know
- Cinnamyl Isovalerate is often listed under 'fragrance' or 'parfum' on ingredient labels, so it may not always appear by name.
- It is regulated as a fragrance allergen in the EU and must be listed on the label if present above certain concentrations.
Common questions
What is Cinnamyl Isovalerate in beauty products?
Cinnamyl Isovalerate is a man-made chemical that smells like cinnamon and vanilla. It's added to products like lotions and perfumes to give them a pleasant scent. Because it's a fragrance ingredient, it can sometimes cause irritation or allergic reactions, especially on sensitive skin.
What does Cinnamyl Isovalerate do in a beauty product?
In a cosmetic product, Cinnamyl Isovalerate serves only as a fragrance component. It does not provide any skincare benefits like moisturizing or exfoliating. Its role is purely sensory—to impart a sweet, warm, balsamic scent to the product.
Is Cinnamyl Isovalerate safe for most people?
Cinnamyl Isovalerate is considered safe for most people when used at low concentrations in cosmetics. However, it is a known skin sensitizer and can cause allergic reactions in sensitive individuals. Regulatory bodies require labeling to alert consumers to its presence.
Who should be careful with Cinnamyl Isovalerate?
Individuals with known fragrance allergies or sensitive skin prone to irritation
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.