Ingredient review

2-sec-Butylcyclohexanone

INCI: 2-SEC-BUTYLCYCLOHEXANONE

A synthetic scent ingredient that adds a fresh note but may cause irritation in sensitive individuals.

beautyskincarefragrance

In plain English

2-sec-Butylcyclohexanone is a man-made chemical used to give products a fresh, minty, or herbal smell. It belongs to a group of fragrance ingredients that are generally considered safe at low levels, but like many fragrance components, it can sometimes cause skin irritation or allergic reactions, especially in people with sensitive skin.

Quick decision guide

Useful, but context matters

2-sec-Butylcyclohexanone 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.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging 2-sec-Butylcyclohexanone.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. 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

moderate

Can bother some users, especially with frequent use, damaged skin, or strong companion ingredients.

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

A synthetic organic compound from the cyclohexanone family, used primarily as a fragrance ingredient in cosmetics and personal care products.

How it works

It evaporates from the skin or product surface, releasing a scent that is perceived by the nose. It does not provide any functional skincare benefit beyond fragrance.

Pros

Pleasant fresh scent

Provides a clean, minty, or herbal aroma that many people find refreshing and uplifting in their skincare routine.

Low comedogenic risk

Unlikely to clog pores, making it suitable for most skin types when used at low concentrations.

Cons and cautions

Potential skin irritant

Can cause redness, itching, or stinging in people with sensitive skin or fragrance allergies, especially in leave-on products.

No skincare benefit

Serves only as a fragrance ingredient and does not moisturize, protect, or improve skin health.

Best for

  • People who enjoy scented products and have no history of fragrance allergies
  • Those looking for a fresh, minty scent in their routine

Use caution if

  • Individuals with sensitive skin or known fragrance allergies
  • Anyone following a fragrance-free skincare routine

Usage tips

If you have sensitive skin, patch test any product containing this ingredient on a small area before full use.
Consider fragrance-free alternatives if you experience irritation from scented products.

Safety summary

Generally recognized as safe at low concentrations in cosmetics, but can cause skin irritation or allergic reactions in sensitive individuals. Regulatory limits help reduce risk.

Research notes

Limited peer-reviewed studies on this specific compound, but it is structurally similar to other cyclohexanone derivatives that have been evaluated for skin sensitization. IFRA standards provide safety guidance.

Common label clues

Typical concentration
Typically used at very low levels (less than 1%) in rinse-off and leave-on products.
Regulatory status
Approved for use in cosmetics in the EU and US at low concentrations, with restrictions set by IFRA to limit skin sensitization.
Common uses
Fragranced skincare, Body lotions, Cleansers, Perfumes
Environmental note
As a synthetic compound, its environmental persistence and bioaccumulation potential are not well-documented, but fragrance ingredients in general are a concern for aquatic ecosystems.

Good to know

  • This ingredient is often listed simply as 'fragrance' or 'parfum' on labels, so it may not appear by name.
  • Regulatory bodies like the International Fragrance Association (IFRA) set usage limits to minimize irritation risk.

Common questions

What is 2-sec-Butylcyclohexanone in beauty products?

2-sec-Butylcyclohexanone is a man-made chemical used to give products a fresh, minty, or herbal smell. It belongs to a group of fragrance ingredients that are generally considered safe at low levels, but like many fragrance components, it can sometimes cause skin irritation or allergic reactions, especially in people with sensitive skin.

What does 2-sec-Butylcyclohexanone do in a beauty product?

It evaporates from the skin or product surface, releasing a scent that is perceived by the nose. It does not provide any functional skincare benefit beyond fragrance.

Is 2-sec-Butylcyclohexanone safe for most people?

Generally recognized as safe at low concentrations in cosmetics, but can cause skin irritation or allergic reactions in sensitive individuals. Regulatory limits help reduce risk.

Who should be careful with 2-sec-Butylcyclohexanone?

Individuals with sensitive skin or known fragrance allergies Anyone following a fragrance-free skincare routine

Research sources

IFRA Standards on Fragrance IngredientsOpenCIR Safety Assessment of Cyclohexanone DerivativesOpenPubMed: Skin sensitization of fragrance ingredientsOpen

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.