Ingredient review
PEG-2 Ricinoleate
INCI: PEG-2 Ricinoleate
A gentle emulsifier that helps mix water and oil in cleansers and creams, with a low risk of irritation.
In plain English
PEG-2 Ricinoleate is a helper ingredient that allows water and oil to blend together smoothly in products like cleansers and lotions. It is made by attaching a small PEG chain to ricinoleic acid, which comes from castor oil. This makes it a mild surfactant that can also help remove makeup and dirt without stripping the skin.
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-2 Ricinoleate 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-2 Ricinoleate.
- 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 created by reacting ethylene oxide with ricinoleic acid (a fatty acid from castor oil). The 'PEG-2' indicates a short polyethylene glycol chain, which gives it water-loving properties while the ricinoleate part is oil-loving.
How it works
It reduces the surface tension between oil and water, allowing them to form a stable mixture. In a cleanser, it helps lift and rinse away oily impurities. In a cream, it keeps the formula from separating.
Pros
Gentle on skin
Unlike harsher sulfates, PEG-2 Ricinoleate cleanses without stripping the skin's natural moisture barrier, making it suitable for daily use.
Effective emulsifier
It reliably blends oil and water phases, ensuring your lotion or cream stays smooth and doesn't separate over time.
Cons and cautions
Potential impurities
During manufacturing, trace amounts of ethylene oxide or 1,4-dioxane can form. Reputable brands purify their ingredients to keep these levels very low.
Not PEG-free
If you actively avoid all PEG compounds, this ingredient won't fit your criteria, even though it is generally considered safe.
Best for
- People with normal to oily skin looking for a gentle cleanser
- Those who prefer mild, non-stripping surfactants
Use caution if
- Individuals avoiding all PEG-derived ingredients due to personal preference or ethical sourcing concerns
Usage tips
Safety summary
PEG-2 Ricinoleate is considered safe for use in cosmetics at typical concentrations. The main safety concern is potential contamination with ethylene oxide or 1,4-dioxane, but these are tightly regulated and kept to trace levels in quality products. It has low irritation and comedogenic potential.
Research notes
Research on PEG-2 Ricinoleate specifically is limited, but it belongs to the well-studied family of PEG fatty acid esters. The Cosmetic Ingredient Review (CIR) panel has evaluated similar PEG esters and found them safe as used. No significant adverse effects have been reported in cosmetic use.
Common label clues
- Typical concentration
- Typically 1–5% in rinse-off products; lower in leave-on formulas
- Regulatory status
- Approved for use in cosmetics by the FDA (as part of generally recognized safe ingredients) and listed in the EU CosIng database. Manufacturers must follow good manufacturing practices to limit impurities.
- Common uses
- Cleansers, Lotions, Creams, Makeup removers
- Environmental note
- Derived from castor oil, a renewable plant source. The PEG manufacturing process has an environmental footprint, but the ingredient itself is biodegradable in standard wastewater treatment.
Good to know
- PEG-2 Ricinoleate is often used in 'oil cleansers' because it helps the oil rinse away cleanly with water.
- The '2' in its name refers to the average number of ethylene oxide units, which keeps it relatively mild.
Common questions
What is PEG-2 Ricinoleate in beauty products?
PEG-2 Ricinoleate is a helper ingredient that allows water and oil to blend together smoothly in products like cleansers and lotions. It is made by attaching a small PEG chain to ricinoleic acid, which comes from castor oil. This makes it a mild surfactant that can also help remove makeup and dirt without stripping the skin.
What does PEG-2 Ricinoleate do in a beauty product?
It reduces the surface tension between oil and water, allowing them to form a stable mixture. In a cleanser, it helps lift and rinse away oily impurities. In a cream, it keeps the formula from separating.
Is PEG-2 Ricinoleate safe for most people?
PEG-2 Ricinoleate is considered safe for use in cosmetics at typical concentrations. The main safety concern is potential contamination with ethylene oxide or 1,4-dioxane, but these are tightly regulated and kept to trace levels in quality products. It has low irritation and comedogenic potential.
Who should be careful with PEG-2 Ricinoleate?
Individuals avoiding all PEG-derived ingredients due to personal preference or ethical sourcing concerns
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.