Ingredient review
Disodium Ethylene Dicocamide PEG-15 Disulfate
INCI: DISODIUM ETHYLENE DICOCAMIDE PEG-15 DISULFATE
A gentle, coconut-derived surfactant that effectively cleanses without over-drying, making it a good choice for sensitive skin.
In plain English
This ingredient is a mild soap-like molecule made from coconut oil and a few synthetic tweaks. It helps water mix with oil and dirt so they can be rinsed away, but it's designed to be less harsh than traditional sulfates like sodium lauryl sulfate. You'll find it in cleansers and shampoos that claim to be gentle or for 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.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Disodium Ethylene Dicocamide PEG-15 Disulfate 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging Disodium Ethylene Dicocamide PEG-15 Disulfate.
- 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
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
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
A semi-synthetic surfactant created by modifying coconut oil fatty acids with ethylene oxide and sulfate groups. It belongs to the class of anionic surfactants, which are effective at removing oil and debris.
How it works
It lowers the surface tension between water and oil, allowing the water to surround and lift away dirt, sebum, and makeup. Its large molecular structure makes it less penetrating into the skin barrier, reducing irritation potential.
Pros
Gentle on skin
Its large molecule size means it doesn't penetrate deeply into the skin, reducing the risk of irritation and dryness compared to harsher sulfates.
Effective foaming
It produces a satisfying lather that helps spread the product evenly, making the cleansing experience pleasant without excessive stripping.
Cons and cautions
Not fully natural
Despite being derived from coconut oil, it undergoes synthetic processing (PEGylation and sulfation), which may not appeal to those seeking entirely natural formulations.
Potential environmental concerns
The PEG (polyethylene glycol) portion can be slow to biodegrade in some aquatic environments, raising mild eco-sustainability questions.
Best for
- People with dry or sensitive skin looking for a gentle cleanser
- Anyone who prefers sulfate-free or mild cleansing products
Use caution if
- Those with known allergies to coconut-derived ingredients (rare)
Usage tips
Safety summary
Disodium Ethylene Dicocamide PEG-15 Disulfate is considered safe for use in rinse-off products at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. As with any surfactant, avoid prolonged contact with eyes.
Research notes
Research on this specific ingredient is limited, but it is structurally similar to other mild anionic surfactants that have been well-studied for low skin irritation. Safety assessments by cosmetic ingredient review panels support its use in rinse-off formulations.
Common label clues
- Typical concentration
- 1–10%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and most major markets. No specific restrictions beyond general surfactant safety limits.
- Common uses
- Facial cleansers, Body washes, Shampoos, Shower gels
- Environmental note
- The PEG component may have moderate biodegradability; however, overall environmental impact is considered low compared to older sulfate surfactants.
Good to know
- This ingredient is often listed as 'sulfate-free' in marketing, but technically it is a sulfate—just a very mild one.
- It is commonly used in baby shampoos due to its low irritation profile.
Common questions
What is Disodium Ethylene Dicocamide PEG-15 Disulfate in beauty products?
This ingredient is a mild soap-like molecule made from coconut oil and a few synthetic tweaks. It helps water mix with oil and dirt so they can be rinsed away, but it's designed to be less harsh than traditional sulfates like sodium lauryl sulfate. You'll find it in cleansers and shampoos that claim to be gentle or for sensitive skin.
What does Disodium Ethylene Dicocamide PEG-15 Disulfate do in a beauty product?
It lowers the surface tension between water and oil, allowing the water to surround and lift away dirt, sebum, and makeup. Its large molecular structure makes it less penetrating into the skin barrier, reducing irritation potential.
Is Disodium Ethylene Dicocamide PEG-15 Disulfate safe for most people?
Disodium Ethylene Dicocamide PEG-15 Disulfate is considered safe for use in rinse-off products at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. As with any surfactant, avoid prolonged contact with eyes.
Who should be careful with Disodium Ethylene Dicocamide PEG-15 Disulfate?
Those with known allergies to coconut-derived ingredients (rare)
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.