Ingredient review

Ammonium Nonoxynol-30 Sulfate

INCI: AMMONIUM NONOXYNOL-30 SULFATE

A gentle cleansing agent that helps create foam and remove impurities without stripping the skin.

beautyskincarecleanser

In plain English

This ingredient is a type of soap-like molecule that helps water mix with oil and dirt so they can be rinsed away. It is considered milder than many traditional sulfates, making it a popular choice for sensitive skin cleansers.

Quick decision guide

Useful, but context matters

Ammonium Nonoxynol-30 Sulfate 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.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Ammonium Nonoxynol-30 Sulfate.
  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

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

A synthetic surfactant derived from nonoxynol (a nonionic surfactant) and ammonium sulfate, designed to provide effective cleansing with reduced irritation.

How it works

It lowers the surface tension between water and oil, allowing the cleanser to lift sebum, makeup, and debris from the skin and hair. Its large molecular structure makes it less penetrating and therefore gentler than smaller surfactants.

Pros

Gentle cleansing

Less likely to strip the skin's natural moisture barrier compared to harsher sulfates like SLS.

Good foam quality

Produces a satisfying lather that many users associate with effective cleansing.

Cons and cautions

Potential for dryness

Even though it's mild, overuse or high concentrations can still lead to dryness or tightness.

Synthetic origin

Not derived from natural sources, which may be a drawback for those seeking plant-based ingredients.

Best for

  • People with normal to dry skin looking for a gentle cleanser
  • Those who prefer sulfate-free or low-irritation formulas

Use caution if

  • Individuals with very sensitive or compromised skin barriers who may react to any surfactant

Usage tips

Use in rinse-off products only; avoid leave-on formulations to minimize prolonged contact.
Pair with moisturizing ingredients like glycerin or ceramides to offset any potential dryness.

Safety summary

Generally recognized as safe for cosmetic use at typical concentrations. Low irritation potential, but individuals with very sensitive skin should patch-test new products.

Research notes

Studies indicate that ammonium nonoxynol-30 sulfate is a mild surfactant with good foaming properties. It is less irritating than sodium lauryl sulfate but may still cause mild dryness with frequent use.

Common label clues

Typical concentration
1–10% in rinse-off products
Regulatory status
Approved for use in cosmetics in the EU, US, and many other regions with no specific restrictions at typical concentrations.
Common uses
Facial cleansers, Shampoos, Body washes, Foaming bath products
Environmental note
Synthetic but biodegradable; less persistent in the environment than some older surfactants.

Good to know

  • This ingredient is often listed in the middle of an INCI list, indicating moderate concentration.
  • It is biodegradable and generally considered safe for aquatic environments at typical use levels.

Common questions

What is Ammonium Nonoxynol-30 Sulfate in beauty products?

This ingredient is a type of soap-like molecule that helps water mix with oil and dirt so they can be rinsed away. It is considered milder than many traditional sulfates, making it a popular choice for sensitive skin cleansers.

What does Ammonium Nonoxynol-30 Sulfate do in a beauty product?

It lowers the surface tension between water and oil, allowing the cleanser to lift sebum, makeup, and debris from the skin and hair. Its large molecular structure makes it less penetrating and therefore gentler than smaller surfactants.

Is Ammonium Nonoxynol-30 Sulfate safe for most people?

Generally recognized as safe for cosmetic use at typical concentrations. Low irritation potential, but individuals with very sensitive skin should patch-test new products.

Who should be careful with Ammonium Nonoxynol-30 Sulfate?

Individuals with very sensitive or compromised skin barriers who may react to any surfactant

Research sources

Cosmetic Ingredient Review (CIR) Safety AssessmentOpenPubChem Compound SummaryOpenEuropean Chemicals Agency (ECHA) InformationOpen

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.