Ingredient review
Isopropyl Ricinoleate
INCI: Isopropyl Ricinoleate
A gentle, non-greasy emollient that softens skin and helps other ingredients spread smoothly.
In plain English
Isopropyl ricinoleate is a semi-synthetic ingredient made from castor oil. It feels light and silky on the skin, helping lotions and creams spread easily without leaving a heavy or sticky residue. It also helps keep moisture in the skin by forming a very thin, breathable film.
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
Isopropyl 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 Isopropyl 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
Isopropyl ricinoleate is the isopropyl ester of ricinoleic acid, a fatty acid naturally found in castor oil. It is produced by reacting ricinoleic acid with isopropyl alcohol, resulting in a clear, oily liquid that is widely used in cosmetics as an emollient and skin conditioner.
How it works
It works by depositing a thin, non-occlusive layer on the skin's surface, which reduces water loss (transepidermal water loss, or TEWL) and makes the skin feel softer and smoother. Its low viscosity also improves the spreadability of formulations, allowing other active ingredients to be applied more evenly.
Pros
Lightweight feel
Unlike heavier oils, isopropyl ricinoleate absorbs quickly and leaves a silky finish, making it ideal for daytime moisturizers and serums.
Improves product texture
It helps creams and lotions glide on smoothly, reducing drag and making application more pleasant.
Cons and cautions
Potential for mild irritation
Although generally well-tolerated, a small number of people may experience redness or stinging, especially on broken or sensitive skin.
Semi-synthetic origin
Those seeking fully natural or plant-based ingredients may prefer alternatives like pure plant oils.
Best for
- People with normal to dry skin looking for lightweight hydration
- Anyone who prefers non-greasy moisturizers and makeup removers
Use caution if
- Individuals with known allergies to castor oil derivatives
Usage tips
Safety summary
Isopropyl ricinoleate is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential, though patch testing is recommended for those with very sensitive skin or known castor oil allergies.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) and other bodies support its use as a skin-conditioning agent. No significant toxicity or health concerns have been identified in cosmetic applications.
Common label clues
- Typical concentration
- 1% to 10% in leave-on products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. The Cosmetic Ingredient Review (CIR) panel has deemed it safe as used.
- Common uses
- Moisturizers, Lip products, Makeup removers, Hair conditioners
- Environmental note
- Derived from castor oil, a renewable resource, but the esterification process involves synthetic chemistry. Biodegradability is expected to be moderate.
Good to know
- Isopropyl ricinoleate is often used in lipsticks and glosses to provide a smooth, shiny finish.
- It is considered non-comedogenic, meaning it is unlikely to clog pores.
Common questions
What is Isopropyl Ricinoleate in beauty products?
Isopropyl ricinoleate is a semi-synthetic ingredient made from castor oil. It feels light and silky on the skin, helping lotions and creams spread easily without leaving a heavy or sticky residue. It also helps keep moisture in the skin by forming a very thin, breathable film.
What does Isopropyl Ricinoleate do in a beauty product?
It works by depositing a thin, non-occlusive layer on the skin's surface, which reduces water loss (transepidermal water loss, or TEWL) and makes the skin feel softer and smoother. Its low viscosity also improves the spreadability of formulations, allowing other active ingredients to be applied more evenly.
Is Isopropyl Ricinoleate safe for most people?
Isopropyl ricinoleate is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential, though patch testing is recommended for those with very sensitive skin or known castor oil allergies.
Who should be careful with Isopropyl Ricinoleate?
Individuals with known allergies to castor oil derivatives
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.