Ingredient review
PEG-11 Cocamide
INCI: PEG-11 Cocamide
An effective cleansing agent that can be drying or irritating for sensitive skin, best suited for rinse-off formulas.
In plain English
PEG-11 Cocamide is a synthetic ingredient made from coconut oil and ethylene oxide. It helps cleansers foam up and remove dirt and oil, but it can strip the skin's natural moisture barrier, especially if you have dry or sensitive skin. It's commonly found in shampoos and body washes that you rinse off quickly.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Main practical flags: irritation is moderate; clogging risk is low.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Useful, but context matters
PEG-11 Cocamide 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging PEG-11 Cocamide.
- 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
moderateCan bother some users, especially with frequent use, damaged skin, or strong companion ingredients.
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
PEG-11 Cocamide is a polyethylene glycol (PEG) derivative of cocamide, which comes from coconut oil. The '11' refers to the average number of ethylene oxide units in the molecule, which determines its water solubility and mildness.
How it works
It works as a surfactant, meaning it lowers the surface tension between oil and water. This allows the product to lift dirt, sebum, and makeup from the skin or hair so they can be rinsed away. It also helps stabilize foam and improve the texture of cleansers.
Pros
Strong cleanser
Effectively removes excess oil, dirt, and product buildup without requiring harsh scrubbing.
Foam booster
Creates a rich, creamy lather that many people find satisfying and helps distribute the product evenly.
Cons and cautions
Potential irritation
Can strip the skin's natural oils, leading to dryness, tightness, or irritation, especially for sensitive skin types.
Ethoxylation concerns
As a PEG compound, it may contain trace amounts of 1,4-dioxane, a potential contaminant, though levels are typically low in well-manufactured products.
Best for
- People with normal to oily skin who want a thorough cleanse
- Those using rinse-off products like shampoos and body washes
Use caution if
- Individuals with very dry, sensitive, or compromised skin barriers
- Anyone looking to avoid PEGs or ethoxylated ingredients
Usage tips
Safety summary
Generally safe for most people in rinse-off products at low concentrations. However, it can be drying and may cause irritation for sensitive skin. The potential for 1,4-dioxane contamination is low but worth noting for those avoiding ethoxylated ingredients.
Research notes
Studies show PEG-11 Cocamide is an effective surfactant with moderate irritation potential. The Cosmetic Ingredient Review (CIR) panel has evaluated similar PEG cocamides and found them safe when formulated to minimize irritation and contamination.
Common label clues
- Typical concentration
- Typically 1–5% in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the US (FDA) and EU (CosIng) within typical concentration limits. Manufacturers are encouraged to keep 1,4-dioxane levels low.
- Common uses
- Cleansers, Shampoos, Body washes, Facial washes
- Environmental note
- Derived from coconut oil (renewable) but processed with ethylene oxide (petrochemical-derived). Biodegradability is moderate; some PEG compounds can persist in water systems.
Good to know
- PEG-11 Cocamide is often used alongside other surfactants to balance cleansing power and mildness.
- The number '11' indicates the PEG chain length, which affects how water-soluble and gentle the ingredient is.
Common questions
What is PEG-11 Cocamide in beauty products?
PEG-11 Cocamide is a synthetic ingredient made from coconut oil and ethylene oxide. It helps cleansers foam up and remove dirt and oil, but it can strip the skin's natural moisture barrier, especially if you have dry or sensitive skin. It's commonly found in shampoos and body washes that you rinse off quickly.
What does PEG-11 Cocamide do in a beauty product?
It works as a surfactant, meaning it lowers the surface tension between oil and water. This allows the product to lift dirt, sebum, and makeup from the skin or hair so they can be rinsed away. It also helps stabilize foam and improve the texture of cleansers.
Is PEG-11 Cocamide safe for most people?
Generally safe for most people in rinse-off products at low concentrations. However, it can be drying and may cause irritation for sensitive skin. The potential for 1,4-dioxane contamination is low but worth noting for those avoiding ethoxylated ingredients.
Who should be careful with PEG-11 Cocamide?
Individuals with very dry, sensitive, or compromised skin barriers Anyone looking to avoid PEGs or ethoxylated ingredients
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.