Ingredient review
PEG-15 DEDM Hydantoin Stearate
INCI: PEG-15 DEDM Hydantoin Stearate
An effective emulsifier but may cause mild irritation for sensitive skin types.
In plain English
PEG-15 DEDM Hydantoin Stearate is a synthetic ingredient that helps oil and water mix together in creams and lotions. It also helps cleanse the skin by reducing surface tension. The 'PEG' part means it's been processed with ethylene oxide, which can sometimes create trace impurities. It's generally considered safe at low levels, but people with very sensitive skin might notice some irritation.
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
- synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Useful, but context matters
PEG-15 DEDM Hydantoin Stearate 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-15 DEDM Hydantoin Stearate.
- 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
A synthetic polymer made by reacting stearic acid with hydantoin and ethylene oxide, used as an emulsifier and surfactant in cosmetics.
How it works
It reduces the surface tension between oil and water, allowing them to blend into a stable emulsion. This helps creams and lotions have a smooth, uniform texture and improves the spreadability of products on the skin.
Pros
Effective emulsifier
Helps oil and water mix smoothly, giving creams and lotions a consistent, non-greasy feel.
Improves product stability
Prevents separation of ingredients over time, so your product stays effective longer.
Cons and cautions
Potential irritation
May cause mild redness or stinging in people with sensitive skin, especially in leave-on products.
Synthetic origin
Made from petrochemicals and processed with ethylene oxide, which some consumers prefer to avoid.
Best for
- People with normal to oily skin looking for stable creams or lotions
- Those using rinse-off cleansers who want effective emulsification
Use caution if
- Individuals with very sensitive or reactive skin
- Anyone with a known allergy to PEG compounds
Usage tips
Safety summary
Generally safe at low concentrations in cosmetics, but may cause mild irritation for sensitive skin. Regulatory bodies consider it acceptable with proper purification.
Research notes
Limited direct studies on this specific compound, but PEG derivatives are well-studied and considered safe within recommended usage levels. The Cosmetic Ingredient Review (CIR) has evaluated similar PEG compounds.
Common label clues
- Typical concentration
- Typically 0.5–5% in rinse-off or leave-on products
- Regulatory status
- Approved for use in cosmetics by the FDA and EU CosIng database, with concentration limits in some regions.
- Common uses
- Creams, Lotions, Cleansers
- Environmental note
- Synthetic and not readily biodegradable; may persist in water systems after rinsing.
Good to know
- PEG compounds can sometimes contain 1,4-dioxane as a byproduct, but reputable manufacturers purify them to safe levels.
- This ingredient is more common in rinse-off products than leave-on creams due to irritation potential.
Common questions
What is PEG-15 DEDM Hydantoin Stearate in beauty products?
PEG-15 DEDM Hydantoin Stearate is a synthetic ingredient that helps oil and water mix together in creams and lotions. It also helps cleanse the skin by reducing surface tension. The 'PEG' part means it's been processed with ethylene oxide, which can sometimes create trace impurities. It's generally considered safe at low levels, but people with very sensitive skin might notice some irritation.
What does PEG-15 DEDM Hydantoin Stearate do in a beauty product?
It reduces the surface tension between oil and water, allowing them to blend into a stable emulsion. This helps creams and lotions have a smooth, uniform texture and improves the spreadability of products on the skin.
Is PEG-15 DEDM Hydantoin Stearate safe for most people?
Generally safe at low concentrations in cosmetics, but may cause mild irritation for sensitive skin. Regulatory bodies consider it acceptable with proper purification.
Who should be careful with PEG-15 DEDM Hydantoin Stearate?
Individuals with very sensitive or reactive skin Anyone with a known allergy to PEG compounds
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.