Ingredient review
Ammonium Cumenesulfonate
INCI: AMMONIUM CUMENESULFONATE
A mild synthetic helper that keeps cleansing formulas clear and stable, but offers no direct skin benefit.
In plain English
Ammonium cumenesulfonate is a synthetic ingredient added to shampoos and body washes to prevent cloudiness and keep the formula looking clear. It also helps other cleansing ingredients mix well with water, so the product works smoothly. It doesn't actively clean your skin or provide any moisturizing or anti-aging benefits — it's more of a behind-the-scenes helper that improves the product's appearance and texture.
Quick decision guide
Useful, but context matters
Ammonium Cumenesulfonate 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 Ammonium Cumenesulfonate.
- 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
A synthetic ammonium salt of cumenesulfonic acid, used primarily as a hydrotrope and surfactant in rinse-off cleansing products.
How it works
It acts as a hydrotrope, meaning it helps dissolve other ingredients (like fragrances or oils) that don't normally mix well with water. This keeps the product clear and stable. As a surfactant, it also contributes mild foaming and cleansing action, but its main role is formulation support rather than primary cleaning.
Pros
Improves product stability
Keeps cleansing formulas clear and prevents separation, so you get a consistent product every time.
Low irritation risk
Generally considered mild on skin, making it suitable for daily use in rinse-off products.
Cons and cautions
Synthetic origin
Not derived from natural sources, which may be a drawback for those preferring natural or organic skincare.
No direct skin benefit
Does not moisturize, exfoliate, or provide any active skincare benefit — it's purely a formulation aid.
Best for
- Anyone using rinse-off cleansers who wants a stable, clear product
- People with normal to oily skin looking for a mild surfactant
Use caution if
- Those seeking 100% natural or organic formulations
- Individuals with known sensitivity to sulfonates (rare)
Usage tips
Safety summary
Ammonium cumenesulfonate is considered safe for use in rinse-off cosmetic products at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. However, it is synthetic and offers no direct skin benefits.
Research notes
Limited peer-reviewed research specifically on ammonium cumenesulfonate in cosmetics. Its safety is supported by general surfactant and hydrotrope data. Regulatory bodies like the Cosmetic Ingredient Review (CIR) have evaluated similar sulfonates and found them safe for rinse-off use.
Common label clues
- Typical concentration
- Typically 0.5% to 5% of the formula
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. Generally recognized as safe at typical concentrations.
- Common uses
- Shampoos, Body washes, Facial cleansers, Liquid soaps
- Environmental note
- As a synthetic surfactant, it may have moderate biodegradability. Check product labels for eco-friendly certifications if this is a concern.
Good to know
- Often appears alongside stronger surfactants like sodium lauryl sulfate to improve clarity.
- It is not a preservative, but it can help preserve formula stability.
Common questions
What is Ammonium Cumenesulfonate in beauty products?
Ammonium cumenesulfonate is a synthetic ingredient added to shampoos and body washes to prevent cloudiness and keep the formula looking clear. It also helps other cleansing ingredients mix well with water, so the product works smoothly. It doesn't actively clean your skin or provide any moisturizing or anti-aging benefits — it's more of a behind-the-scenes helper that improves the product's appearance and texture.
What does Ammonium Cumenesulfonate do in a beauty product?
It acts as a hydrotrope, meaning it helps dissolve other ingredients (like fragrances or oils) that don't normally mix well with water. This keeps the product clear and stable. As a surfactant, it also contributes mild foaming and cleansing action, but its main role is formulation support rather than primary cleaning.
Is Ammonium Cumenesulfonate safe for most people?
Ammonium cumenesulfonate is considered safe for use in rinse-off cosmetic products at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. However, it is synthetic and offers no direct skin benefits.
Who should be careful with Ammonium Cumenesulfonate?
Those seeking 100% natural or organic formulations Individuals with known sensitivity to sulfonates (rare)
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.