Ingredient review
DEA-Perfluorohexyl Ethylphosphate
INCI: DEA-Perfluorohexyl Ethylphosphate
A synthetic fluorinated ingredient that helps products spread evenly and resist water, but raises environmental persistence concerns.
In plain English
This is a man-made chemical that helps cosmetic products like sunscreen or foundation spread smoothly on your skin and stay put even when you sweat or go in water. It belongs to a group of chemicals called PFAS (per- and polyfluoroalkyl substances), which are very stable and don't break down easily in the environment. While it can improve product performance, its long-term environmental impact is a concern for some consumers.
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
DEA-Perfluorohexyl Ethylphosphate 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 DEA-Perfluorohexyl Ethylphosphate.
- 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 surfactant made by combining diethanolamine (DEA) with a perfluorohexyl ethyl phosphate group. It is a type of PFAS, designed to reduce surface tension and create water-resistant films on skin.
How it works
It lowers the surface tension of a formula, allowing it to spread more evenly over the skin. Its fluorinated tail also repels water and oil, creating a barrier that helps the product stay in place longer, especially in water-resistant sunscreens or long-wear makeup.
Pros
Even application
Helps creams and liquids spread smoothly without pilling or streaking, making makeup and sunscreen easier to apply.
Water resistance
Creates a protective film that keeps products effective longer during swimming, sweating, or humid conditions.
Cons and cautions
Potential irritation
May cause stinging or redness on sensitive or compromised skin, especially in high concentrations.
Environmental concerns
As a PFAS, it is highly persistent in the environment and can accumulate over time, raising ecological questions.
Best for
- People who want water-resistant sunscreens or long-wear makeup
- Those with normal to oily skin looking for smooth application
Use caution if
- Individuals with very sensitive or reactive skin
- Consumers concerned about PFAS environmental impact
Usage tips
Safety summary
Generally considered safe for topical use at low concentrations, but may cause irritation in sensitive individuals. Environmental persistence is the primary concern.
Research notes
Studies show effective water resistance and spreadability, but limited long-term safety data on skin absorption. Environmental impact is well-documented for PFAS compounds.
Common label clues
- Typical concentration
- Typically used at 0.1–2% in formulations
- Regulatory status
- Approved for use in cosmetics in the US and EU, but subject to increasing scrutiny due to PFAS concerns. Some regions may restrict or require labeling.
- Common uses
- Sunscreens, Foundations, Water-resistant products
- Environmental note
- PFAS chemicals like this one are known for their persistence in the environment, leading to bioaccumulation concerns. Eco-conscious consumers may prefer alternatives.
Good to know
- This ingredient is part of the PFAS family, which has been under regulatory review in some regions for environmental persistence.
- It is often listed under complex INCI names, so check labels if you are avoiding fluorinated compounds.
Common questions
What is DEA-Perfluorohexyl Ethylphosphate in beauty products?
This is a man-made chemical that helps cosmetic products like sunscreen or foundation spread smoothly on your skin and stay put even when you sweat or go in water. It belongs to a group of chemicals called PFAS (per- and polyfluoroalkyl substances), which are very stable and don't break down easily in the environment. While it can improve product performance, its long-term environmental impact is a concern for some consumers.
What does DEA-Perfluorohexyl Ethylphosphate do in a beauty product?
It lowers the surface tension of a formula, allowing it to spread more evenly over the skin. Its fluorinated tail also repels water and oil, creating a barrier that helps the product stay in place longer, especially in water-resistant sunscreens or long-wear makeup.
Is DEA-Perfluorohexyl Ethylphosphate safe for most people?
Generally considered safe for topical use at low concentrations, but may cause irritation in sensitive individuals. Environmental persistence is the primary concern.
Who should be careful with DEA-Perfluorohexyl Ethylphosphate?
Individuals with very sensitive or reactive skin Consumers concerned about PFAS environmental impact
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.