Ingredient review
Phytosteryl Ricinoleate
INCI: Phytosteryl Ricinoleate
A gentle, plant-derived emollient that helps soften and soothe skin without clogging pores.
In plain English
Phytosteryl Ricinoleate is a skin-friendly ingredient made by combining plant sterols (phytosterols) with a fatty acid from castor oil (ricinoleic acid). It works like a moisturizing shield, helping to keep water in your skin and making it feel smooth and comfortable. Because it's non-greasy and unlikely to clog pores, it's a good choice for many skin types, including sensitive or oily 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
Phytosteryl 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 Phytosteryl 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
Phytosteryl Ricinoleate is a semi-synthetic ester created by chemically linking phytosterols (plant-derived compounds that mimic cholesterol) with ricinoleic acid (a fatty acid from castor oil). It appears as a waxy solid or viscous liquid and is used in cosmetics for its emollient and skin-conditioning properties.
How it works
When applied to the skin, Phytosteryl Ricinoleate forms a thin, breathable film that reduces water loss (transepidermal water loss, or TEWL) and helps maintain hydration. The phytosterol portion may also support the skin's natural barrier by integrating into lipid layers, while the ricinoleate part provides smooth, non-greasy slip and a soothing feel.
Pros
Gentle on sensitive skin
Phytosteryl Ricinoleate has a low irritation risk and is unlikely to cause stinging or redness, making it a safe choice for reactive or easily irritated skin.
Non-comedogenic moisturizing
Unlike heavier oils, this ingredient provides hydration and softness without clogging pores, so it works well for oily or acne-prone skin types.
Cons and cautions
Limited direct research
Most evidence for its benefits comes from studies on its components (phytosterols and ricinoleic acid) rather than the combined ester, so the full picture is less clear.
Rare allergy risk
Although uncommon, individuals with a specific allergy to castor oil derivatives may experience a reaction, so patch testing is wise for those with known sensitivities.
Best for
- People with dry or dehydrated skin looking for a gentle moisturizer
- Those with sensitive or acne-prone skin who want a non-comedogenic emollient
Use caution if
- Individuals with a known allergy to castor oil or phytosterols (very rare)
Usage tips
Safety summary
Phytosteryl Ricinoleate is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic risk, and no significant safety concerns have been reported in regulatory or dermatological reviews.
Research notes
Research on phytosterols and ricinoleic acid individually supports skin barrier support and anti-inflammatory effects. Direct studies on Phytosteryl Ricinoleate are limited, but its chemical structure and safety profile align with its intended use as a gentle emollient.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Moisturizers, Anti-aging creams, Lip balms, Serums
- Environmental note
- Sourced from renewable plant materials (castor oil and plant sterols) and considered biodegradable, making it a relatively eco-friendly emollient choice.
Good to know
- Phytosteryl Ricinoleate is often used as a natural alternative to silicone-based emollients.
- It is considered biodegradable and derived from renewable plant sources.
Common questions
What is Phytosteryl Ricinoleate in beauty products?
Phytosteryl Ricinoleate is a skin-friendly ingredient made by combining plant sterols (phytosterols) with a fatty acid from castor oil (ricinoleic acid). It works like a moisturizing shield, helping to keep water in your skin and making it feel smooth and comfortable. Because it's non-greasy and unlikely to clog pores, it's a good choice for many skin types, including sensitive or oily skin.
What does Phytosteryl Ricinoleate do in a beauty product?
When applied to the skin, Phytosteryl Ricinoleate forms a thin, breathable film that reduces water loss (transepidermal water loss, or TEWL) and helps maintain hydration. The phytosterol portion may also support the skin's natural barrier by integrating into lipid layers, while the ricinoleate part provides smooth, non-greasy slip and a soothing feel.
Is Phytosteryl Ricinoleate safe for most people?
Phytosteryl Ricinoleate is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic risk, and no significant safety concerns have been reported in regulatory or dermatological reviews.
Who should be careful with Phytosteryl Ricinoleate?
Individuals with a known allergy to castor oil or phytosterols (very 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.