Ingredient review

Cis-3-Hexenyl Propionate

INCI: CIS-3-HEXENYL PROPIONATE

A synthetic fragrance ingredient that adds a fresh, green scent; generally considered safe at low concentrations but may be a concern for those with fragrance sensitivities.

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In plain English

Cis-3-Hexenyl Propionate is a man-made ingredient that smells like fresh-cut grass or green leaves. It's added to skincare and beauty products to give them a pleasant, natural-smelling fragrance. Because it's a fragrance ingredient, it doesn't provide any skin benefits like moisturizing or anti-aging, but it can make the product more enjoyable to use. For most people, it's safe in the tiny amounts used, but if you have very sensitive skin or a known fragrance allergy, you might want to avoid it.

Review score

Safety, usefulness, and evidence

3.5Good

3.5/ 5

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

How reviews are scored

Quick decision guide

Useful, but context matters

Cis-3-Hexenyl Propionate 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 Propionate.
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

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

Cis-3-Hexenyl Propionate is a synthetic ester derived from cis-3-hexenol (leaf alcohol) and propionic acid. It is a colorless liquid with a powerful, green, grassy odor reminiscent of crushed leaves or green apples.

How it works

In a cosmetic product, it functions solely as a fragrance ingredient. It evaporates from the skin after application, releasing its scent molecules into the air. It does not actively interact with the skin's structure or biology.

Pros

Pleasant natural scent

Provides a fresh, green, leafy aroma that many find appealing and natural, enhancing the overall user experience.

Low irritation potential for most

At typical use levels, it has a low irritation risk for the general population, making it suitable for many product types.

Cons and cautions

No skincare benefit

This ingredient is purely for scent and offers no moisturizing, anti-aging, or other functional skincare benefits.

Potential allergen

As a fragrance ingredient, it can cause allergic reactions or irritation in people with sensitive skin or fragrance sensitivities, especially in leave-on products.

Best for

People who enjoy fresh, green-scented products
Those without known fragrance allergies

Use caution if

Individuals with fragrance allergies or very sensitive skin

Usage tips

If you have sensitive skin, look for products labeled 'fragrance-free' to avoid this and other fragrance ingredients.

Patch test a new product containing this ingredient on a small area of skin before full application.

It is most commonly found in leave-on products like lotions and perfumes where the scent can be appreciated.

Safety summary

Cis-3-Hexenyl Propionate is considered safe for use in cosmetics at typical concentrations. The International Fragrance Association (IFRA) sets usage standards to minimize the risk of skin sensitization. However, as with any fragrance ingredient, it can be a contact allergen for a small subset of individuals.

Research notes

Research on this specific ingredient is limited, but it is part of a well-studied class of fragrance esters. Safety assessments by industry panels (RIFM, IFRA) have concluded it is safe for its intended use. No significant peer-reviewed studies on its cosmetic efficacy exist, as it is not an active skincare ingredient.

Common label clues

Typical concentration: Typically used at very low levels, often below 1% in leave-on products.
Regulatory status: Approved for use as a fragrance ingredient in cosmetics by major regulatory bodies (e.g., IFRA, FDA) when used within recommended concentration limits.
Common uses: Fragranced skincare, Perfumes, Body lotions, Cleansers
Environmental note: As a synthetic compound, its environmental impact is generally considered low, but like all fragrance materials, it should be used responsibly to minimize waste.

Good to know

Cis-3-Hexenyl Propionate is often used to create 'green' accords in perfumery, mimicking the scent of fresh vegetation.
It is a synthetic version of a compound found naturally in some fruits and plants.

Common questions

What is Cis-3-Hexenyl Propionate in beauty products?

What does Cis-3-Hexenyl Propionate do in a beauty product?

Is Cis-3-Hexenyl Propionate safe for most people?

Who should be careful with Cis-3-Hexenyl Propionate?

Individuals with fragrance allergies or very sensitive skin

Research sources

The Good Scents Company - Cis-3-Hexenyl PropionateOpen PubChem - Cis-3-Hexenyl PropionateOpen IFRA StandardsOpen

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.