Ingredient review

Sodium PEG-6 Cocamide Carboxylate

INCI: SODIUM PEG-6 COCAMIDE CARBOXYLATE

A gentle, coconut-derived surfactant that cleanses effectively while being kinder to sensitive skin than traditional sulfates.

beautyskincarecleanser

In plain English

Sodium PEG-6 Cocamide Carboxylate is a mild cleansing ingredient made from coconut oil and a small amount of polyethylene glycol (PEG). It helps water mix with oil and dirt so they can be rinsed away, but it's much less harsh than common sulfates like SLS. This makes it a good choice for people with dry or sensitive skin who want a thorough but gentle clean.

Review score

Safety, usefulness, and evidence

4.0Good
4.0/ 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
semi synthetic
Evidence
moderate
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

Sodium PEG-6 Cocamide 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 Sodium PEG-6 Cocamide 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 semi-synthetic surfactant created by reacting coconut oil fatty acids with PEG-6 (a short-chain polyethylene glycol) and then converting it to a sodium salt. It belongs to the class of carboxylate surfactants known for their mildness and good foaming properties.

How it works

It reduces the surface tension between water and oil, allowing oily impurities and makeup to be emulsified and washed away. Its large molecular structure makes it less penetrating and less irritating than smaller surfactants, while still providing a rich lather.

Pros

Very mild on skin

Its large molecular structure means it doesn't penetrate deeply, reducing the risk of irritation and dryness compared to harsher surfactants like sodium lauryl sulfate.

Good foam quality

It produces a creamy, stable lather that feels pleasant on the skin, making it a popular choice for gentle foaming cleansers and body washes.

Cons and cautions

PEG-related purity concerns

As a PEG derivative, there is a small risk of contamination with 1,4-dioxane during manufacturing. Reputable brands use purified grades to keep levels well below safety limits.

Not for heavy-duty cleansing

It may struggle to remove stubborn waterproof makeup or long-wear sunscreen without a double-cleansing step, so it's best paired with an oil-based first cleanser.

Best for

  • People with sensitive or easily irritated skin
  • Those looking for a sulfate-free cleanser that still foams

Use caution if

  • Individuals with known allergies to coconut-derived ingredients (rare)

Usage tips

Use in a second-step cleanser after an oil-based makeup remover for best results.
Look for products that list it early in the ingredient list to ensure it's a primary surfactant.
If you have very dry skin, follow with a moisturizer to replenish hydration after cleansing.

Safety summary

Sodium PEG-6 Cocamide Carboxylate is considered safe for use in cosmetics at typical concentrations. The main concern is potential contamination with 1,4-dioxane during manufacturing, but reputable suppliers and brands use purification processes to keep levels within safe limits. It is non-irritating and non-comedogenic for most skin types.

Research notes

Studies on similar PEG carboxylate surfactants show they are significantly milder than traditional sulfates, with low skin irritation potential. The CIR has reviewed PEG compounds and concluded they are safe when used as intended. No specific clinical trials on this exact ingredient were found, but its safety profile is well-established through ingredient class reviews.

Common label clues

Typical concentration
1–10% in rinse-off products; lower in leave-on formulas
Regulatory status
Approved for use in cosmetics in the EU, US, and other major markets. The Cosmetic Ingredient Review (CIR) has evaluated PEG compounds and found them safe when formulated to minimize impurities.
Common uses
Facial cleansers, Body washes, Shampoos, Makeup removers
Environmental note
Derived from coconut oil, a renewable resource, and is biodegradable, making it a relatively eco-friendly surfactant choice.

Good to know

  • This ingredient is often found in 'sulfate-free' formulas because it provides a gentle alternative to SLS and SLES.
  • It is biodegradable and considered more environmentally friendly than many petroleum-based surfactants.

Common questions

What is Sodium PEG-6 Cocamide Carboxylate in beauty products?

Sodium PEG-6 Cocamide Carboxylate is a mild cleansing ingredient made from coconut oil and a small amount of polyethylene glycol (PEG). It helps water mix with oil and dirt so they can be rinsed away, but it's much less harsh than common sulfates like SLS. This makes it a good choice for people with dry or sensitive skin who want a thorough but gentle clean.

What does Sodium PEG-6 Cocamide Carboxylate do in a beauty product?

It reduces the surface tension between water and oil, allowing oily impurities and makeup to be emulsified and washed away. Its large molecular structure makes it less penetrating and less irritating than smaller surfactants, while still providing a rich lather.

Is Sodium PEG-6 Cocamide Carboxylate safe for most people?

Sodium PEG-6 Cocamide Carboxylate is considered safe for use in cosmetics at typical concentrations. The main concern is potential contamination with 1,4-dioxane during manufacturing, but reputable suppliers and brands use purification processes to keep levels within safe limits. It is non-irritating and non-comedogenic for most skin types.

Who should be careful with Sodium PEG-6 Cocamide Carboxylate?

Individuals with known allergies to coconut-derived ingredients (rare)

Research sources

Cosmetic Ingredient Review (CIR) – Safety Assessment of PEGsOpenEuropean Chemicals Agency (ECHA) – Sodium PEG-6 Cocamide CarboxylateOpenPubMed – Mild Surfactants for Sensitive SkinOpen

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.