Ingredient review
PPG-10-Buteth-9
INCI: PPG-10-Buteth-9
A synthetic helper that makes cleansers foam and rinse clean, but can be drying for sensitive skin.
In plain English
PPG-10-Buteth-9 is a man-made ingredient that helps oil and water mix together in products like face washes and shampoos. It's a type of surfactant, which means it helps lift dirt and oil from your skin so they can be rinsed away with water. Think of it as a gentle detergent that creates a light foam and leaves skin feeling clean, though it may be too stripping for very dry or sensitive skin types.
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-10-Buteth-9 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-10-Buteth-9.
- 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
PPG-10-Buteth-9 is a synthetic polymer made by reacting butyl alcohol with propylene oxide and ethylene oxide. It belongs to a class of ingredients called alkyl ethoxylates, which are widely used as non-ionic surfactants and emulsifiers in personal care products.
How it works
In a cosmetic formula, PPG-10-Buteth-9 reduces the surface tension between water and oil, allowing them to blend into a stable mixture. When you wash your face, it surrounds dirt and excess oil particles, lifting them away from the skin so they can be rinsed off easily. It also helps create a light foam that makes cleansing feel satisfying.
Pros
Effective cleanser
Lifts dirt and oil from the skin's surface, leaving it feeling fresh and clean without a greasy film.
Good foaming action
Creates a satisfying lather that many people enjoy during their cleansing routine, making the experience feel thorough.
Cons and cautions
Can be drying
May strip the skin's natural moisture barrier if used too frequently or in high concentrations, especially for dry or sensitive skin.
Synthetic origin
Not derived from natural sources, which may be a drawback for those seeking plant-based or 'clean' beauty products.
Best for
- People with normal to oily skin looking for a foaming cleanser
- Those who prefer lightweight, rinse-off products
Use caution if
- Individuals with very dry, compromised, or sensitive skin
- Anyone seeking a completely natural or plant-based routine
Usage tips
Safety summary
PPG-10-Buteth-9 is considered safe for use in rinse-off cosmetics at typical concentrations. It can cause mild irritation or dryness in sensitive individuals, but serious reactions are rare. Avoid prolonged contact with eyes.
Research notes
Research on PPG-10-Buteth-9 specifically is limited, but studies on similar alkyl ethoxylates indicate low acute toxicity and good biodegradability. The Cosmetic Ingredient Review has deemed related ingredients safe for cosmetic use.
Common label clues
- Typical concentration
- Typically 0.5% to 5% of a formula
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. The Cosmetic Ingredient Review (CIR) panel has evaluated similar alkyl ethoxylates and found them safe at typical use levels.
- Common uses
- Cleansers, Shampoos, Body washes, Makeup removers
- Environmental note
- As a synthetic surfactant, it may contribute to aquatic toxicity if not properly treated in wastewater, though it is generally considered biodegradable.
Good to know
- PPG-10-Buteth-9 is often used alongside other surfactants to balance cleansing power and mildness.
- It is considered biodegradable under standard wastewater treatment conditions.
Common questions
What is PPG-10-Buteth-9 in beauty products?
PPG-10-Buteth-9 is a man-made ingredient that helps oil and water mix together in products like face washes and shampoos. It's a type of surfactant, which means it helps lift dirt and oil from your skin so they can be rinsed away with water. Think of it as a gentle detergent that creates a light foam and leaves skin feeling clean, though it may be too stripping for very dry or sensitive skin types.
What does PPG-10-Buteth-9 do in a beauty product?
In a cosmetic formula, PPG-10-Buteth-9 reduces the surface tension between water and oil, allowing them to blend into a stable mixture. When you wash your face, it surrounds dirt and excess oil particles, lifting them away from the skin so they can be rinsed off easily. It also helps create a light foam that makes cleansing feel satisfying.
Is PPG-10-Buteth-9 safe for most people?
PPG-10-Buteth-9 is considered safe for use in rinse-off cosmetics at typical concentrations. It can cause mild irritation or dryness in sensitive individuals, but serious reactions are rare. Avoid prolonged contact with eyes.
Who should be careful with PPG-10-Buteth-9?
Individuals with very dry, compromised, or sensitive skin Anyone seeking a completely natural or plant-based routine
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.