Ingredient review
PEG-20 Hydrogenated Castor Oil Laurate
INCI: PEG-20 Hydrogenated Castor Oil Laurate
A gentle, castor-oil-derived emulsifier that helps rinse away makeup and sunscreen without stripping the skin.
In plain English
This ingredient is a modified castor oil that has been treated with ethylene oxide (PEG) and lauric acid to make it water-friendly. In a cleanser, it acts like a bridge between oil and water, allowing oily dirt and makeup to be rinsed off easily. Because it's derived from castor oil, it tends to be milder than many synthetic detergents.
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
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
PEG-20 Hydrogenated Castor Oil 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-20 Hydrogenated Castor Oil 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 semi-synthetic emulsifier made by reacting hydrogenated castor oil with ethylene oxide (PEG-20) and lauric acid. It belongs to the PEG (polyethylene glycol) family of surfactants.
How it works
Its molecular structure has both a water-loving (hydrophilic) head and an oil-loving (lipophilic) tail. When you massage a product containing it onto wet skin, it surrounds oil-based impurities and allows them to be washed away with water.
Pros
Gentle on skin
Derived from castor oil, it cleans without stripping the skin's natural moisture barrier, making it suitable for daily use.
Good for oil-based cleansing
Effectively emulsifies oils and sunscreen, helping them rinse off cleanly without leaving a greasy residue.
Cons and cautions
Low foam
Produces minimal lather compared to stronger surfactants, which may be less satisfying for those who prefer a foamy wash.
PEG purity concerns
As a PEG compound, it may contain trace impurities like 1,4-dioxane if not properly purified, though reputable brands ensure low levels.
Best for
- People with normal to dry skin looking for a gentle cleanser
- Those who prefer oil-based cleansing without harsh detergents
Use caution if
- Individuals with known sensitivity to PEG compounds
- Those who need a very high-foaming cleanser
Usage tips
Safety summary
Generally considered safe at typical use levels. The main concern is potential contamination with 1,4-dioxane during manufacturing, but reputable suppliers control this. Skin irritation is rare.
Research notes
Limited peer-reviewed studies specifically on this ingredient, but the broader PEG and castor oil derivative family is well-studied and considered safe in cosmetics at low concentrations.
Common label clues
- Typical concentration
- 1–10%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. Manufacturers are expected to follow purity guidelines to minimize impurities.
- Common uses
- Cleansers, Makeup removers, Shampoos, Body washes
- Environmental note
- Castor oil is a renewable plant-based resource, but the PEG processing involves synthetic chemistry. Biodegradability is moderate.
Good to know
- Hydrogenated castor oil is a solid wax at room temperature, so products containing it may feel thicker or creamier.
- PEG-20 indicates the average number of ethylene oxide units, which affects how water-soluble the ingredient is.
Common questions
What is PEG-20 Hydrogenated Castor Oil Laurate in beauty products?
This ingredient is a modified castor oil that has been treated with ethylene oxide (PEG) and lauric acid to make it water-friendly. In a cleanser, it acts like a bridge between oil and water, allowing oily dirt and makeup to be rinsed off easily. Because it's derived from castor oil, it tends to be milder than many synthetic detergents.
What does PEG-20 Hydrogenated Castor Oil Laurate do in a beauty product?
Its molecular structure has both a water-loving (hydrophilic) head and an oil-loving (lipophilic) tail. When you massage a product containing it onto wet skin, it surrounds oil-based impurities and allows them to be washed away with water.
Is PEG-20 Hydrogenated Castor Oil Laurate safe for most people?
Generally considered safe at typical use levels. The main concern is potential contamination with 1,4-dioxane during manufacturing, but reputable suppliers control this. Skin irritation is rare.
Who should be careful with PEG-20 Hydrogenated Castor Oil Laurate?
Individuals with known sensitivity to PEG compounds Those who need a very high-foaming cleanser
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.