Ingredient review

Ammonium Laureth-6 Carboxylate

INCI: AMMONIUM LAURETH-6 CARBOXYLATE

A gentle, low-irritation surfactant that effectively cleanses without stripping the skin's natural moisture barrier.

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In plain English

This is a mild soap-like ingredient that helps water mix with oil and dirt so they can be rinsed away. It's often used in 'gentle' or 'sensitive skin' cleansers because it cleans without leaving skin feeling tight or dry.

Quick decision guide

Useful, but context matters

Ammonium Laureth-6 Carboxylate 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 Laureth-6 Carboxylate.
  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 lauric acid (found in coconut or palm oil) and ethylene oxide, then neutralized with ammonium. It belongs to the class of ether carboxylates, known for their mildness.

How it works

It lowers the surface tension between water and oil, allowing dirt, sebum, and makeup to be emulsified and rinsed off. Its large molecular structure makes it less penetrating and therefore less irritating than harsher sulfates.

Pros

Very gentle on skin

Its large molecular structure means it stays on the surface and doesn't penetrate, reducing irritation and dryness.

Good for sensitive formulas

Often used in baby washes and dermatologist-recommended cleansers because it cleans effectively without causing stinging or redness.

Cons and cautions

Not a heavy-duty cleanser

It may not fully remove long-wear makeup or heavy sunscreen in a single wash, requiring a double-cleanse step.

Synthetic origin

It is manufactured through chemical processing, which may not align with natural or 'clean' beauty preferences.

Best for

  • People with dry or sensitive skin
  • Those looking for a sulfate-free cleanser

Use caution if

  • Individuals seeking a high-foam, deep-cleansing experience
  • Those who prefer exclusively natural ingredients

Usage tips

Use in a double-cleanse routine if you wear heavy makeup or waterproof sunscreen.
Pair with a moisturizer to maintain hydration, especially if you have very dry skin.
Look for it in products labeled 'gentle' or 'for sensitive skin' for best results.

Safety summary

Low irritation and low comedogenic risk. Well-tolerated by most skin types, including sensitive skin. No significant safety concerns at typical use levels.

Research notes

Ether carboxylates like this one are well-documented in cosmetic science as mild surfactants. Studies show they cause less protein denaturation and skin barrier disruption compared to sodium lauryl sulfate.

Common label clues

Typical concentration
1–10% in rinse-off products; lower in leave-on formulations
Regulatory status
Approved for use in cosmetics in the US (FDA) and EU (CosIng). Generally recognized as safe when used as directed.
Common uses
Facial cleansers, Body washes, Shampoos, Baby care products
Environmental note
Synthetic but biodegradable; sourcing of lauric acid may involve palm oil, so look for RSPO-certified suppliers if sustainability is a concern.

Good to know

  • Ammonium laureth-6 carboxylate is considered biodegradable and is often used as a sulfate alternative.
  • It can be combined with other mild surfactants to boost foam without increasing irritation.

Common questions

What is Ammonium Laureth-6 Carboxylate in beauty products?

This is a mild soap-like ingredient that helps water mix with oil and dirt so they can be rinsed away. It's often used in 'gentle' or 'sensitive skin' cleansers because it cleans without leaving skin feeling tight or dry.

What does Ammonium Laureth-6 Carboxylate do in a beauty product?

It lowers the surface tension between water and oil, allowing dirt, sebum, and makeup to be emulsified and rinsed off. Its large molecular structure makes it less penetrating and therefore less irritating than harsher sulfates.

Is Ammonium Laureth-6 Carboxylate safe for most people?

Low irritation and low comedogenic risk. Well-tolerated by most skin types, including sensitive skin. No significant safety concerns at typical use levels.

Who should be careful with Ammonium Laureth-6 Carboxylate?

Individuals seeking a high-foam, deep-cleansing experience Those who prefer exclusively natural ingredients

Research sources

CosIng Database - European CommissionOpenPubMed - Mild Surfactants ReviewOpenEnvironmental Working Group - Ingredient SafetyOpen

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.