Ingredient review
PEG-9 Butylene Glycol Laurate
INCI: PEG-9 Butylene Glycol Laurate
A reliable synthetic emulsifier that helps mix water and oil in creams and cleansers, generally well-tolerated by most skin types.
In plain English
PEG-9 Butylene Glycol Laurate is a man-made ingredient that helps water and oil stay blended together in products like lotions and cleansers. It's part of a family of ingredients called PEGs (polyethylene glycols), which are widely used in cosmetics for their gentle cleansing and emulsifying abilities. This particular version is considered mild and unlikely to clog pores or 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
PEG-9 Butylene Glycol Laurate 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 PEG-9 Butylene Glycol Laurate.
- 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
A synthetic compound made by reacting lauric acid (a fatty acid from coconut or palm oil) with butylene glycol and ethylene oxide. It belongs to the PEG surfactant family and is designed to reduce surface tension between oil and water.
How it works
It sits at the boundary between oil and water droplets, lowering surface tension so they can mix into a stable emulsion. This prevents creams and lotions from separating and helps cleansers lift away dirt and makeup without stripping the skin.
Pros
Gentle emulsifier
It blends oil and water without harsh surfactants, making it suitable for daily-use cleansers and moisturizers that won't strip the skin.
Low pore-clogging risk
Rated low on the comedogenic scale, so it's unlikely to cause breakouts for most people, even those with acne-prone skin.
Cons and cautions
Synthetic origin
As a PEG compound, it is not natural or biodegradable, which may be a concern for those seeking eco-friendly or plant-based skincare.
Potential trace impurities
Manufacturing of PEGs can produce trace levels of 1,4-dioxane, but cosmetic-grade ingredients are purified to safe levels per regulatory standards.
Best for
- People looking for gentle, non-stripping cleansers
- Those with normal to combination skin who want stable, creamy formulas
Use caution if
- Individuals with known sensitivity to PEG compounds (rare)
Usage tips
Safety summary
PEG-9 Butylene Glycol Laurate is considered safe for cosmetic use at typical concentrations. It has low irritation and comedogenic potential. As with all PEGs, cosmetic-grade purification ensures minimal impurities, making it suitable for most skin types.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) panel have concluded that PEG compounds are safe in cosmetics when formulated properly. Specific studies on PEG-9 Butylene Glycol Laurate are limited, but its chemical class is well-studied and widely used.
Common label clues
- Typical concentration
- 0.5–5%
- Regulatory status
- Approved for use in cosmetics by the FDA and the European Commission, with concentration limits typically set by good manufacturing practices.
- Common uses
- Cleansers, Lotions, Creams, Makeup removers
- Environmental note
- As a synthetic PEG compound, it is not readily biodegradable. Some manufacturers are moving toward plant-based alternatives to reduce environmental impact.
Good to know
- PEG-9 Butylene Glycol Laurate is often used alongside other emulsifiers to create a balanced formula.
- It is considered safe by major regulatory bodies when used in cosmetic concentrations.
Common questions
What is PEG-9 Butylene Glycol Laurate in beauty products?
PEG-9 Butylene Glycol Laurate is a man-made ingredient that helps water and oil stay blended together in products like lotions and cleansers. It's part of a family of ingredients called PEGs (polyethylene glycols), which are widely used in cosmetics for their gentle cleansing and emulsifying abilities. This particular version is considered mild and unlikely to clog pores or cause irritation for most people.
What does PEG-9 Butylene Glycol Laurate do in a beauty product?
It sits at the boundary between oil and water droplets, lowering surface tension so they can mix into a stable emulsion. This prevents creams and lotions from separating and helps cleansers lift away dirt and makeup without stripping the skin.
Is PEG-9 Butylene Glycol Laurate safe for most people?
PEG-9 Butylene Glycol Laurate is considered safe for cosmetic use at typical concentrations. It has low irritation and comedogenic potential. As with all PEGs, cosmetic-grade purification ensures minimal impurities, making it suitable for most skin types.
Who should be careful with PEG-9 Butylene Glycol Laurate?
Individuals with known sensitivity to PEG compounds (rare)
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.