Ingredient review
PPG-6 Castorate
INCI: PPG-6 Castorate
A gentle, castor-oil-derived emollient that helps products glide on smoothly without clogging pores.
In plain English
PPG-6 Castorate is a modified version of castor oil that has been processed to make it more stable and less greasy. In skincare and makeup, it acts as a skin softener and helps other ingredients spread evenly. It's often found in lip products and foundations because it gives a silky, non-sticky feel.
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
PPG-6 Castorate 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 PPG-6 Castorate.
- 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
PPG-6 Castorate is a semi-synthetic ingredient made by reacting castor oil with propylene oxide. The result is a clear, viscous liquid that functions as an emollient and skin-conditioning agent in cosmetics.
How it works
It sits on the surface of the skin, forming a thin, non-occlusive film that reduces water loss and makes the skin feel smooth. In formulas, it also helps disperse pigments evenly and improves the slip of products like lipsticks and foundations.
Pros
Non-greasy feel
Unlike pure castor oil, PPG-6 Castorate leaves a silky, lightweight finish that won't weigh down the skin or feel sticky.
Low irritation risk
It is considered very gentle and unlikely to cause redness or stinging, making it suitable for sensitive skin types.
Cons and cautions
Semi-synthetic origin
Because it is chemically modified, it may not fit into a 'natural' or 'clean' beauty routine if that is important to you.
Limited independent research
Most safety data comes from industry sources, and there are few long-term studies on its effects beyond cosmetic use.
Best for
- Anyone looking for a lightweight emollient in lip or face products
- People with oily or combination skin who want moisture without greasiness
Use caution if
- Those strictly avoiding any synthetic or semi-synthetic ingredients
Usage tips
Safety summary
PPG-6 Castorate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, and no significant safety concerns have been reported in regulatory reviews.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) panel have concluded that PPG-6 Castorate is safe as used in cosmetics. Most evidence comes from industry-sponsored studies, but no adverse effects have been documented in human use.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics in the US (FDA) and EU (CosIng) with no concentration restrictions.
- Common uses
- Lipsticks, Lip balms, Foundations, Creams, Lotions
- Environmental note
- Derived from castor oil, a renewable plant source, but the chemical modification process may involve synthetic reagents.
Good to know
- PPG-6 Castorate is often used in lipsticks to prevent feathering and improve color payoff.
- It is not the same as pure castor oil—it has been chemically modified for better stability and texture.
Common questions
What is PPG-6 Castorate in beauty products?
PPG-6 Castorate is a modified version of castor oil that has been processed to make it more stable and less greasy. In skincare and makeup, it acts as a skin softener and helps other ingredients spread evenly. It's often found in lip products and foundations because it gives a silky, non-sticky feel.
What does PPG-6 Castorate do in a beauty product?
It sits on the surface of the skin, forming a thin, non-occlusive film that reduces water loss and makes the skin feel smooth. In formulas, it also helps disperse pigments evenly and improves the slip of products like lipsticks and foundations.
Is PPG-6 Castorate safe for most people?
PPG-6 Castorate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, and no significant safety concerns have been reported in regulatory reviews.
Who should be careful with PPG-6 Castorate?
Those strictly avoiding any synthetic or semi-synthetic 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.