Ingredient review
PEG-8 Di/Triricinoleate
INCI: PEG-8 DI/TRIRICINOLEATE
A gentle emulsifier that helps mix oil and water in your products, with a low risk of irritation or clogged pores.
In plain English
PEG-8 Di/Triricinoleate is a helper ingredient that allows oil and water to blend together smoothly in creams, lotions, and cleansers. It is made by combining polyethylene glycol (a synthetic compound) with ricinoleic acid from castor oil. This ingredient is considered very gentle on skin and unlikely to cause breakouts or irritation, making it a safe choice for most people.
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-8 Di/Triricinoleate 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-8 Di/Triricinoleate.
- 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 polyethylene glycol (PEG-8) with di- and triricinoleate, which are derivatives of castor oil. It belongs to the PEG family of emulsifiers, known for their mildness and compatibility with many skin types.
How it works
It reduces the surface tension between oil and water, allowing them to form a stable, uniform mixture. In a product, this means the formula stays consistent and doesn't separate into layers. It also helps spread the product evenly on your skin and can assist in removing oil-based makeup or sunscreen.
Pros
Gentle on skin
PEG-8 Di/Triricinoleate has a very low irritation risk, making it suitable for sensitive skin types and daily use.
Effective emulsifier
It reliably blends oil and water, ensuring your product stays smooth and doesn't separate, which improves the user experience.
Cons and cautions
Potential manufacturing impurities
PEG compounds can be contaminated with trace amounts of ethylene oxide or 1,4-dioxane if not properly purified, though reputable manufacturers remove these.
Not fully natural
Because it is semi-synthetic, it may not appeal to those seeking 100% natural or organic skincare ingredients.
Best for
- Anyone looking for a gentle, non-irritating emulsifier in their skincare
- People with sensitive or reactive skin who need mild formulas
Use caution if
- Those who prefer strictly natural or plant-based ingredients (PEG-8 is semi-synthetic)
Usage tips
Safety summary
PEG-8 Di/Triricinoleate is considered safe for use in cosmetics at typical concentrations. The main safety concern is potential contamination with ethylene oxide or 1,4-dioxane during manufacturing, but reputable suppliers and brands ensure these impurities are removed. It has low irritation and comedogenic potential, making it suitable for most skin types.
Research notes
The Cosmetic Ingredient Review (CIR) panel has reviewed PEG compounds and found them safe for use in cosmetics when formulated to meet purity standards. Studies indicate low skin irritation and sensitization potential. No specific studies on PEG-8 Di/Triricinoleate alone are widely cited, but it is grouped with other PEG emulsifiers in safety assessments.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics by the FDA and EU CosIng database. The Cosmetic Ingredient Review (CIR) panel has deemed PEG compounds safe when properly formulated and purified.
- Common uses
- Cleansers, Makeup removers, Lotions, Creams
- Environmental note
- PEG compounds are not readily biodegradable in all environments, but they are considered low in toxicity to aquatic life. Some brands are moving toward biodegradable alternatives.
Good to know
- PEG-8 Di/Triricinoleate is often used in makeup removers because it gently breaks down oils and waterproof formulas.
- The number '8' in PEG-8 refers to the average number of ethylene oxide units, which affects its solubility and mildness.
Common questions
What is PEG-8 Di/Triricinoleate in beauty products?
PEG-8 Di/Triricinoleate is a helper ingredient that allows oil and water to blend together smoothly in creams, lotions, and cleansers. It is made by combining polyethylene glycol (a synthetic compound) with ricinoleic acid from castor oil. This ingredient is considered very gentle on skin and unlikely to cause breakouts or irritation, making it a safe choice for most people.
What does PEG-8 Di/Triricinoleate do in a beauty product?
It reduces the surface tension between oil and water, allowing them to form a stable, uniform mixture. In a product, this means the formula stays consistent and doesn't separate into layers. It also helps spread the product evenly on your skin and can assist in removing oil-based makeup or sunscreen.
Is PEG-8 Di/Triricinoleate safe for most people?
PEG-8 Di/Triricinoleate is considered safe for use in cosmetics at typical concentrations. The main safety concern is potential contamination with ethylene oxide or 1,4-dioxane during manufacturing, but reputable suppliers and brands ensure these impurities are removed. It has low irritation and comedogenic potential, making it suitable for most skin types.
Who should be careful with PEG-8 Di/Triricinoleate?
Those who prefer strictly natural or plant-based ingredients (PEG-8 is semi-synthetic)
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.