Ingredient review
PEG-240
INCI: PEG-240
PEG-240 is a safe, synthetic thickener that improves product texture but may be less eco-friendly than natural alternatives.
In plain English
PEG-240 is a man-made ingredient that helps make products like shampoos and gels feel thicker and more luxurious. It doesn't do much for your skin directly but improves how a product feels and spreads. It's generally considered safe, though some people prefer to avoid PEGs due to environmental concerns.
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-240 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-240.
- 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
PEG-240 is a type of polyethylene glycol, a synthetic polymer made from ethylene oxide. It is a thick, water-soluble liquid used to increase the viscosity of cosmetic formulas.
How it works
In a product, PEG-240 dissolves in water and its long molecular chains entangle, creating a thicker, more gel-like consistency. This helps stabilize the formula and gives a smooth, spreadable texture.
Pros
Improves texture
Makes products feel thicker and more luxurious, enhancing the user experience without affecting skin health.
Low irritation risk
PEG-240 is generally non-irritating and non-sensitizing, making it suitable for most skin types, including sensitive skin.
Cons and cautions
Synthetic origin
As a petroleum-derived ingredient, it may not align with preferences for natural or sustainable beauty products.
Environmental concerns
PEGs can be slow to biodegrade and may contribute to microplastic pollution, though PEG-240 is water-soluble and less persistent than some plastics.
Best for
- Anyone looking for a well-textured shampoo or body wash
- People with normal to oily skin who want a lightweight gel
Use caution if
- Those seeking fully natural or organic products
- Individuals with known sensitivity to PEG compounds (rare)
Usage tips
Safety summary
PEG-240 is considered safe for use in cosmetics at typical concentrations. The main safety concern is potential contamination with 1,4-dioxane during production, but reputable manufacturers purify the ingredient to meet safety standards.
Research notes
Studies show PEGs are generally non-irritating and non-sensitizing. The Cosmetic Ingredient Review (CIR) panel has deemed PEG compounds safe as used in cosmetics, provided they meet purity specifications.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics by the FDA and EU CosIng database. Manufacturers must ensure low levels of 1,4-dioxane impurity.
- Common uses
- Shampoos, Conditioners, Body washes, Gels
- Environmental note
- PEG-240 is synthetic and not readily biodegradable. Some brands are moving toward plant-based thickeners to reduce environmental impact.
Good to know
- PEG-240 is often used in combination with other thickeners to achieve the perfect consistency.
- The number '240' refers to the average molecular weight, which affects its thickening ability.
Common questions
What is PEG-240 in beauty products?
PEG-240 is a man-made ingredient that helps make products like shampoos and gels feel thicker and more luxurious. It doesn't do much for your skin directly but improves how a product feels and spreads. It's generally considered safe, though some people prefer to avoid PEGs due to environmental concerns.
What does PEG-240 do in a beauty product?
In a product, PEG-240 dissolves in water and its long molecular chains entangle, creating a thicker, more gel-like consistency. This helps stabilize the formula and gives a smooth, spreadable texture.
Is PEG-240 safe for most people?
PEG-240 is considered safe for use in cosmetics at typical concentrations. The main safety concern is potential contamination with 1,4-dioxane during production, but reputable manufacturers purify the ingredient to meet safety standards.
Who should be careful with PEG-240?
Those seeking fully natural or organic products 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.