Ingredient review
Diceteareth-10 Phosphate
INCI: DICETEARETH-10 PHOSPHATE
A mild synthetic emulsifier that helps mix water and oil in creams and cleansers, generally considered safe for most skin types.
In plain English
Diceteareth-10 Phosphate is a man-made ingredient that helps water and oil stay blended together in products like lotions and cleansers. It is a type of surfactant, meaning it can also help cleanse the skin by lifting dirt and oil. Because it is derived from fatty alcohols, it is relatively gentle and unlikely to cause irritation for most people.
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
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Diceteareth-10 Phosphate 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 Diceteareth-10 Phosphate.
- 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
Diceteareth-10 Phosphate is a synthetic phosphate ester derived from cetearyl alcohol (a fatty alcohol from plant or synthetic sources). It belongs to a class of ingredients called ethoxylated surfactants, which are processed to be milder and more water-soluble.
How it works
In a cosmetic product, Diceteareth-10 Phosphate sits at the boundary between oil and water droplets, reducing surface tension so they mix into a stable emulsion. This prevents the product from separating into layers. As a surfactant, it also helps water rinse away oil and dirt from the skin.
Pros
Effective emulsifier
It reliably blends oil and water, giving creams and lotions a smooth, uniform texture that doesn't separate.
Low irritation potential
Compared to harsher surfactants like sodium lauryl sulfate, it is much gentler on the skin and less likely to cause stinging or redness.
Cons and cautions
Ethoxylation concerns
The manufacturing process can create trace amounts of 1,4-dioxane, a potential carcinogen, though reputable brands purify their ingredients to keep levels very low.
Not fully biodegradable
This ingredient may persist in the environment longer than some plant-based alternatives, which is a consideration for eco-conscious consumers.
Best for
- People who use lotions, creams, or sunscreens and want a stable texture
- Those with normal to combination skin looking for gentle cleansing products
Use caution if
- Individuals who prefer to avoid ethoxylated ingredients due to trace contaminant concerns
Usage tips
Safety summary
Diceteareth-10 Phosphate is considered safe for use in cosmetics at typical concentrations. The main concern is the potential presence of 1,4-dioxane, but reputable manufacturers purify the ingredient to keep levels within safe limits set by regulators.
Research notes
The Cosmetic Ingredient Review (CIR) panel has reviewed similar ethoxylated phosphate esters and found them safe for use in cosmetics. No specific studies on Diceteareth-10 Phosphate alone were found, but its chemical class is well-understood and considered low-risk.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions, with concentration limits generally not specified due to low risk.
- Common uses
- Cleansers, Lotions, Creams, Sunscreens
- Environmental note
- As a synthetic ethoxylated compound, it may not biodegrade quickly; however, wastewater treatment can reduce its environmental impact.
Good to know
- Diceteareth-10 Phosphate is often used alongside other emulsifiers to create a more stable formula.
- It is considered safe by the Cosmetic Ingredient Review (CIR) panel at typical use levels.
Common questions
What is Diceteareth-10 Phosphate in beauty products?
Diceteareth-10 Phosphate is a man-made ingredient that helps water and oil stay blended together in products like lotions and cleansers. It is a type of surfactant, meaning it can also help cleanse the skin by lifting dirt and oil. Because it is derived from fatty alcohols, it is relatively gentle and unlikely to cause irritation for most people.
What does Diceteareth-10 Phosphate do in a beauty product?
In a cosmetic product, Diceteareth-10 Phosphate sits at the boundary between oil and water droplets, reducing surface tension so they mix into a stable emulsion. This prevents the product from separating into layers. As a surfactant, it also helps water rinse away oil and dirt from the skin.
Is Diceteareth-10 Phosphate safe for most people?
Diceteareth-10 Phosphate is considered safe for use in cosmetics at typical concentrations. The main concern is the potential presence of 1,4-dioxane, but reputable manufacturers purify the ingredient to keep levels within safe limits set by regulators.
Who should be careful with Diceteareth-10 Phosphate?
Individuals who prefer to avoid ethoxylated ingredients due to trace contaminant concerns
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.