Ingredient review
PEG-60 Glyceryl Triisostearate
INCI: PEG-60 GLYCERYL TRIISOSTEARATE
A reliable synthetic emulsifier that helps create stable, smooth formulas without common irritation concerns.
In plain English
PEG-60 Glyceryl Triisostearate is a man-made ingredient that acts like a bridge between oil and water. In a lotion or cleanser, it stops the oil and water from separating, keeping the product smooth and consistent. The 'PEG-60' part means it has been processed to be gentle on skin, and 'glyceryl triisostearate' comes from a fatty acid found in natural oils. It is widely used because it is effective and has a low risk of clogging pores or causing irritation.
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 Triisostearate 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 Triisostearate.
- 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 created by reacting ethylene oxide with glyceryl triisostearate, a derivative of isostearic acid (a fatty acid). It belongs to the PEG (polyethylene glycol) family, which are known for their ability to mix oil and water.
How it works
In a cosmetic formula, PEG-60 Glyceryl Triisostearate reduces the surface tension between oil and water droplets, allowing them to blend into a stable emulsion. This prevents the product from separating into layers and gives it a smooth, uniform texture. It also helps other ingredients spread evenly on the skin.
Pros
Gentle on skin
PEG-60 Glyceryl Triisostearate has a low irritation risk and is generally well-tolerated, even by sensitive skin types.
Non-comedogenic
It has a low comedogenic rating, meaning it is unlikely to clog pores or contribute to breakouts, making it suitable for acne-prone skin.
Cons and cautions
Synthetic origin
As a PEG-based synthetic ingredient, it may not align with clean or natural beauty preferences, even though it is considered safe.
Potential impurities
During manufacturing, PEG compounds can sometimes contain trace impurities like ethylene oxide or 1,4-dioxane, though reputable brands ensure purification.
Best for
- Anyone looking for a gentle, effective emulsifier in their skincare
- People with oily or acne-prone skin who want non-comedogenic formulas
Use caution if
- Those who strictly avoid synthetic or PEG-based ingredients
Usage tips
Safety summary
PEG-60 Glyceryl Triisostearate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential. However, as with all PEGs, quality control is important to minimize trace impurities.
Research notes
The Cosmetic Ingredient Review (CIR) panel has evaluated PEG compounds and found them safe for use in cosmetics when formulated properly. Individual studies on PEG-60 Glyceryl Triisostearate are limited, but its chemical class is well-studied and considered low-risk.
Common label clues
- Typical concentration
- 1% to 5%
- Regulatory status
- Approved for use in cosmetics by the FDA and the European Commission, with no concentration restrictions in leave-on or rinse-off products.
- Common uses
- Cleansers, Moisturizers, Makeup removers, Serums
- Environmental note
- PEG compounds are generally biodegradable, but their production involves petrochemicals, which may raise sustainability concerns for some consumers.
Good to know
- PEG-60 Glyceryl Triisostearate is often found in high-end cleansers and makeup removers for its gentle cleansing ability.
- The number '60' refers to the number of ethylene oxide units, which influences its water solubility and mildness.
Common questions
What is PEG-60 Glyceryl Triisostearate in beauty products?
PEG-60 Glyceryl Triisostearate is a man-made ingredient that acts like a bridge between oil and water. In a lotion or cleanser, it stops the oil and water from separating, keeping the product smooth and consistent. The 'PEG-60' part means it has been processed to be gentle on skin, and 'glyceryl triisostearate' comes from a fatty acid found in natural oils. It is widely used because it is effective and has a low risk of clogging pores or causing irritation.
What does PEG-60 Glyceryl Triisostearate do in a beauty product?
In a cosmetic formula, PEG-60 Glyceryl Triisostearate reduces the surface tension between oil and water droplets, allowing them to blend into a stable emulsion. This prevents the product from separating into layers and gives it a smooth, uniform texture. It also helps other ingredients spread evenly on the skin.
Is PEG-60 Glyceryl Triisostearate safe for most people?
PEG-60 Glyceryl Triisostearate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential. However, as with all PEGs, quality control is important to minimize trace impurities.
Who should be careful with PEG-60 Glyceryl Triisostearate?
Those who strictly avoid synthetic or PEG-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.