Ingredient review
PPG-35 Butyl Ether Phosphate
INCI: PPG-35 Butyl Ether Phosphate
A synthetic emulsifier that helps mix oil and water, but may be drying or irritating for sensitive skin.
In plain English
PPG-35 Butyl Ether Phosphate is a man-made ingredient that helps oil and water stay mixed together in a product. It works like a gentle detergent, which is why it's often used in cleansers and makeup removers. For most people it's fine, but if your skin is very dry or easily irritated, it might feel a bit stripping over time.
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
PPG-35 Butyl Ether Phosphate 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 PPG-35 Butyl Ether 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
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 phosphate ester surfactant created by reacting butyl ether with propylene glycol and phosphoric acid. It is designed to reduce surface tension between oil and water, making it useful in cleansing and emulsifying formulas.
How it works
It lowers the surface tension between oil and water, allowing them to blend into a stable emulsion. In cleansers, it helps lift dirt, oil, and makeup from the skin so they can be rinsed away. In moisturizers, it helps keep the formula from separating.
Pros
Effective emulsifier
Helps oil and water blend smoothly, so your cleanser or moisturizer stays mixed and works consistently.
Good for makeup removal
Its surfactant properties make it especially useful in makeup removers and oil cleansers, helping break down long-wear or waterproof products.
Cons and cautions
Can be drying
As a surfactant, it can strip the skin's natural oils if used too frequently, especially in high concentrations or rinse-off products.
Potential irritant
Some people with sensitive or reactive skin may experience redness or stinging, particularly in leave-on formulas.
Best for
- People with normal to oily skin looking for effective cleansers
- Anyone using makeup removers or two-phase products
Use caution if
- Those with very dry, sensitive, or eczema-prone skin
- People who prefer exclusively natural or plant-based ingredients
Usage tips
Safety summary
Generally considered safe for use in cosmetics at typical concentrations. Mild to moderate irritation risk for sensitive skin, especially in leave-on products. Not known to be comedogenic.
Research notes
Limited independent studies on this specific ingredient. Safety assessments rely on general surfactant toxicology and industry data. No major safety flags have been raised by regulatory bodies.
Common label clues
- Typical concentration
- Usually under 5% in rinse-off products; lower in leave-on formulas
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Cleansers, Makeup removers, Moisturizers
- Environmental note
- As a synthetic compound, its biodegradability is lower than some plant-based alternatives. However, it is not known to be a major environmental concern at typical use levels.
Good to know
- PPG-35 Butyl Ether Phosphate is often found in micellar waters and oil cleansers.
- It is not a fragrance or preservative — its job is purely structural in the formula.
Common questions
What is PPG-35 Butyl Ether Phosphate in beauty products?
PPG-35 Butyl Ether Phosphate is a man-made ingredient that helps oil and water stay mixed together in a product. It works like a gentle detergent, which is why it's often used in cleansers and makeup removers. For most people it's fine, but if your skin is very dry or easily irritated, it might feel a bit stripping over time.
What does PPG-35 Butyl Ether Phosphate do in a beauty product?
It lowers the surface tension between oil and water, allowing them to blend into a stable emulsion. In cleansers, it helps lift dirt, oil, and makeup from the skin so they can be rinsed away. In moisturizers, it helps keep the formula from separating.
Is PPG-35 Butyl Ether Phosphate safe for most people?
Generally considered safe for use in cosmetics at typical concentrations. Mild to moderate irritation risk for sensitive skin, especially in leave-on products. Not known to be comedogenic.
Who should be careful with PPG-35 Butyl Ether Phosphate?
Those with very dry, sensitive, or eczema-prone skin People who prefer exclusively natural or plant-based ingredients
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.