Ingredient review
PEG-5 Cocamine
INCI: PEG-5 Cocamine
An effective cleansing agent that helps remove dirt and oil, but may cause irritation for sensitive skin types.
In plain English
PEG-5 Cocamine is a synthetic ingredient made from coconut oil and ethylene oxide. It acts as a surfactant, meaning it helps water mix with oil and dirt so they can be rinsed away. You'll find it in cleansers and shampoos where it creates foam and helps remove buildup. However, because it can be somewhat stripping, it may not be ideal for very dry or sensitive skin.
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-5 Cocamine 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-5 Cocamine.
- 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-5 Cocamine is a polyethylene glycol (PEG) derivative of cocamine, which is a fatty amine derived from coconut oil. The 'PEG-5' indicates the number of ethylene oxide units added, which modifies its water solubility and mildness.
How it works
In a cosmetic product, PEG-5 Cocamine lowers the surface tension between water and oil, allowing them to mix. This helps lift sebum, makeup, and environmental debris from the skin or hair so they can be washed away with water. It also helps stabilize emulsions, keeping formulas from separating.
Pros
Strong cleanser
Effectively removes excess oil, sebum, and product buildup, leaving skin and hair feeling clean.
Good foam booster
Helps create a satisfying lather in shampoos and body washes, which many users associate with effective cleansing.
Cons and cautions
Potential irritation
Can be drying or irritating for sensitive or compromised skin, especially if used in high concentrations or left on the skin.
Ethoxylation concerns
As a PEG compound, it may contain trace amounts of 1,4-dioxane, a potential carcinogen, though reputable manufacturers purify their ingredients to minimize this.
Best for
- People with normal to oily skin looking for a thorough cleanse
- Those who use rinse-off products and do not have sensitive skin
Use caution if
- Individuals with very dry, sensitive, or eczema-prone skin
- Anyone seeking a completely natural or PEG-free routine
Usage tips
Safety summary
PEG-5 Cocamine is considered safe for use in rinse-off cosmetics at typical concentrations. However, it may cause irritation in sensitive individuals, and the ethoxylation process raises minor concerns about trace contaminants. Regulatory bodies like the Cosmetic Ingredient Review (CIR) have reviewed similar PEG compounds and found them safe when formulated properly.
Research notes
Research on PEG-5 Cocamine specifically is limited, but studies on related PEG surfactants indicate they are effective cleansers with moderate irritation potential. The CIR has evaluated PEG compounds and concluded they are safe for cosmetic use when impurities are controlled. No significant long-term health risks have been identified in cosmetic applications.
Common label clues
- Typical concentration
- 0.5% to 5% in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions, with concentration limits typically set for rinse-off products.
- Common uses
- Cleansers, Shampoos, Conditioners, Body washes
- Environmental note
- PEG compounds are generally biodegradable, but the ethoxylation process requires energy and chemical inputs. Some environmental groups recommend avoiding PEGs due to potential 1,4-dioxane contamination.
Good to know
- PEG-5 Cocamine is often used in combination with other milder surfactants to reduce irritation.
- The 'cocamine' part comes from coconut oil, but the PEG modification makes it semi-synthetic.
Common questions
What is PEG-5 Cocamine in beauty products?
PEG-5 Cocamine is a synthetic ingredient made from coconut oil and ethylene oxide. It acts as a surfactant, meaning it helps water mix with oil and dirt so they can be rinsed away. You'll find it in cleansers and shampoos where it creates foam and helps remove buildup. However, because it can be somewhat stripping, it may not be ideal for very dry or sensitive skin.
What does PEG-5 Cocamine do in a beauty product?
In a cosmetic product, PEG-5 Cocamine lowers the surface tension between water and oil, allowing them to mix. This helps lift sebum, makeup, and environmental debris from the skin or hair so they can be washed away with water. It also helps stabilize emulsions, keeping formulas from separating.
Is PEG-5 Cocamine safe for most people?
PEG-5 Cocamine is considered safe for use in rinse-off cosmetics at typical concentrations. However, it may cause irritation in sensitive individuals, and the ethoxylation process raises minor concerns about trace contaminants. Regulatory bodies like the Cosmetic Ingredient Review (CIR) have reviewed similar PEG compounds and found them safe when formulated properly.
Who should be careful with PEG-5 Cocamine?
Individuals with very dry, sensitive, or eczema-prone skin Anyone seeking a completely natural or PEG-free routine
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.