Ingredient review
PEG-60 Glyceryl Isostearate
INCI: PEG-60 Glyceryl Isostearate
A reliable emulsifier that helps create stable, creamy formulas, but may be too heavy for very oily or acne-prone skin.
In plain English
PEG-60 Glyceryl Isostearate is a synthetic ingredient that acts like a bridge between oil and water, allowing them to mix smoothly in products like cleansers and lotions. The 'PEG-60' part means it has been processed with ethylene oxide to make it water-friendly, while the 'glyceryl isostearate' part is derived from fatty acids. It helps create a nice, creamy texture and can also boost the cleaning power of a formula. However, because it is a surfactant, it can sometimes strip the skin of its natural oils if used in high amounts or in leave-on products.
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-60 Glyceryl Isostearate 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-60 Glyceryl Isostearate.
- 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 emulsifier made by combining polyethylene glycol (PEG) with glyceryl isostearate, a fatty acid derivative. It is commonly used to stabilize oil-in-water emulsions.
How it works
It reduces the surface tension between oil and water, allowing them to blend into a stable, uniform mixture. This prevents the product from separating and gives it a smooth, creamy consistency.
Pros
Effective emulsifier
Helps oil and water mix into a stable, creamy product that doesn't separate, improving the user experience.
Low irritation risk
Generally well-tolerated by most skin types, making it suitable for daily use in rinse-off products.
Cons and cautions
May be drying
In leave-on products or high concentrations, it can strip natural oils, leaving skin feeling tight or dry.
Synthetic origin
Derived from petroleum and processed with ethylene oxide, which may be a concern for those seeking natural or minimal processing.
Best for
- People with normal to combination skin
- Those looking for stable, creamy cleansers or lotions
Use caution if
- Individuals with very dry or compromised skin barriers
- Those who prefer entirely natural or PEG-free formulations
Usage tips
Safety summary
PEG-60 Glyceryl Isostearate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, but may be drying for some skin types. As with all PEGs, purity is important to avoid contaminants like 1,4-dioxane.
Research notes
Research supports its safety as an emulsifier in cosmetics. Studies show low skin irritation and sensitization potential. The Cosmetic Ingredient Review (CIR) panel has evaluated PEG compounds and found them safe when formulated properly.
Common label clues
- Typical concentration
- 1% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions, with concentration limits typically set by good manufacturing practices.
- Common uses
- Cleansers, Moisturizers, Sunscreens, Makeup removers
- Environmental note
- PEG compounds are synthetic and may not be biodegradable, but they are used in low concentrations and are generally considered safe for the environment at those levels.
Good to know
- PEG compounds can be contaminated with 1,4-dioxane during manufacturing, but reputable brands purify their ingredients to safe levels.
- This ingredient is not typically used alone; it is part of a broader emulsifier system.
Common questions
What is PEG-60 Glyceryl Isostearate in beauty products?
PEG-60 Glyceryl Isostearate is a synthetic ingredient that acts like a bridge between oil and water, allowing them to mix smoothly in products like cleansers and lotions. The 'PEG-60' part means it has been processed with ethylene oxide to make it water-friendly, while the 'glyceryl isostearate' part is derived from fatty acids. It helps create a nice, creamy texture and can also boost the cleaning power of a formula. However, because it is a surfactant, it can sometimes strip the skin of its natural oils if used in high amounts or in leave-on products.
What does PEG-60 Glyceryl Isostearate do in a beauty product?
It reduces the surface tension between oil and water, allowing them to blend into a stable, uniform mixture. This prevents the product from separating and gives it a smooth, creamy consistency.
Is PEG-60 Glyceryl Isostearate safe for most people?
PEG-60 Glyceryl Isostearate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, but may be drying for some skin types. As with all PEGs, purity is important to avoid contaminants like 1,4-dioxane.
Who should be careful with PEG-60 Glyceryl Isostearate?
Individuals with very dry or compromised skin barriers Those who prefer entirely natural or PEG-free formulations
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.