Ingredient review
Cis-3-Hexenyl Methyl Carbonate
INCI: CIS-3-HEXENYL METHYL CARBONATE
A synthetic fragrance ingredient that adds a fresh, green scent but offers no skincare benefits and may cause sensitivity in some individuals.
In plain English
This is a man-made chemical used to give skincare and beauty products a fresh, grassy, or leafy smell. It doesn't do anything for your skin's health or appearance—it's purely there for the scent. While generally considered safe at low levels, it can be irritating for people with sensitive skin or fragrance 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.
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
Cis-3-Hexenyl Methyl Carbonate 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 Cis-3-Hexenyl Methyl Carbonate.
- 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
Cis-3-Hexenyl Methyl Carbonate is a synthetic ester used as a fragrance ingredient. It is designed to mimic the natural green, leafy aroma of freshly cut grass or crushed leaves. It belongs to a class of compounds known as carbonates, which are often used in perfumery for their stability and pleasant scent profiles.
How it works
In a cosmetic product, this ingredient works solely as a fragrance component. It evaporates from the skin's surface, releasing its characteristic green scent. It does not interact with the skin's biology, moisturize, or provide any active skincare benefit. Its role is purely sensory, enhancing the user's experience of the product.
Pros
Pleasant green scent
Provides a natural, leafy aroma that can make a product feel more refreshing and enjoyable to use.
Low risk of comedogenicity
At typical usage levels, this ingredient is unlikely to clog pores, making it suitable for most skin types in terms of acne risk.
Cons and cautions
No skincare benefit
This ingredient does not hydrate, protect, or improve the skin in any way—it only adds scent.
Potential irritant
Like many fragrance ingredients, it can cause contact dermatitis or irritation in people with sensitive skin or fragrance allergies.
Best for
- People who enjoy fresh, green-scented products and do not have fragrance sensitivities.
- Those looking for a pleasant sensory experience in their skincare routine.
Use caution if
- Individuals with sensitive, reactive, or eczema-prone skin who may react to fragrance ingredients.
- Anyone with a known allergy or sensitivity to synthetic fragrances.
Usage tips
Safety summary
Cis-3-Hexenyl Methyl Carbonate is considered safe for use in cosmetics at typical low concentrations by major regulatory bodies. However, like all fragrance ingredients, it has the potential to cause skin irritation or allergic reactions in sensitive individuals. The International Fragrance Association (IFRA) sets usage guidelines to minimize risk.
Research notes
Research on this specific compound is limited, but it is structurally similar to other fragrance esters that have been evaluated for safety. The main concern is skin sensitization, which is well-documented for many fragrance ingredients. No significant systemic toxicity has been reported at cosmetic use levels.
Common label clues
- Typical concentration
- Typically used at very low levels (under 1%) in finished products due to its strong scent.
- Regulatory status
- Approved for use as a fragrance ingredient in cosmetics in the EU, US, and many other regions, subject to concentration limits and labeling requirements for allergens.
- Common uses
- Fragranced skincare, Perfumes, Body lotions, Hair products
- Environmental note
- As a synthetic compound, its environmental impact depends on manufacturing processes and biodegradability. Generally, fragrance ingredients are used in very small amounts, limiting their environmental footprint.
Good to know
- Cis-3-Hexenyl Methyl Carbonate is often used in 'green' or 'herbal' fragrance blends to add a realistic leafy note.
- It is considered a synthetic alternative to natural green-smelling compounds like cis-3-hexenol, which is found in green tea and fresh leaves.
Common questions
What is Cis-3-Hexenyl Methyl Carbonate in beauty products?
This is a man-made chemical used to give skincare and beauty products a fresh, grassy, or leafy smell. It doesn't do anything for your skin's health or appearance—it's purely there for the scent. While generally considered safe at low levels, it can be irritating for people with sensitive skin or fragrance allergies.
What does Cis-3-Hexenyl Methyl Carbonate do in a beauty product?
In a cosmetic product, this ingredient works solely as a fragrance component. It evaporates from the skin's surface, releasing its characteristic green scent. It does not interact with the skin's biology, moisturize, or provide any active skincare benefit. Its role is purely sensory, enhancing the user's experience of the product.
Is Cis-3-Hexenyl Methyl Carbonate safe for most people?
Cis-3-Hexenyl Methyl Carbonate is considered safe for use in cosmetics at typical low concentrations by major regulatory bodies. However, like all fragrance ingredients, it has the potential to cause skin irritation or allergic reactions in sensitive individuals. The International Fragrance Association (IFRA) sets usage guidelines to minimize risk.
Who should be careful with Cis-3-Hexenyl Methyl Carbonate?
Individuals with sensitive, reactive, or eczema-prone skin who may react to fragrance ingredients. Anyone with a known allergy or sensitivity to synthetic fragrances.
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.