Ingredient review
Sulfurized Tea-Ricinoleate
INCI: SULFURIZED TEA-RICINOLEATE
A sulfur-infused oil derivative that helps control acne and dandruff by reducing microbes and excess oil, but may cause irritation in sensitive skin.
In plain English
This ingredient is a blend of tea and castor oil that has been treated with sulfur. Sulfur is known for its ability to kill bacteria and fungi, and it also helps dry out excess oil on the skin. In skincare, it's used to treat acne and dandruff by targeting the microbes that contribute to these conditions. However, because sulfur can be drying and irritating, it's best for oily or acne-prone skin and should be used cautiously on sensitive or dry 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.
Main practical flags: irritation is moderate; clogging risk is low.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Sulfurized Tea-Ricinoleate can be useful, but watch for some irritation potential.
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 Sulfurized Tea-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
moderateCan bother some users, especially with frequent use, damaged skin, or strong companion ingredients.
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 compound created by reacting sulfur with a blend of tea and ricinoleic acid (from castor oil). It combines the antimicrobial power of sulfur with the emollient properties of fatty acids.
How it works
Sulfur in this ingredient breaks down into small particles that penetrate pores and kill acne-causing bacteria (like C. acnes) and fungi (like Malassezia). It also helps dissolve excess sebum and dead skin cells, reducing clogged pores and flaking.
Pros
Effective antimicrobial
Targets bacteria and fungi that cause acne and dandruff, making it a dual-action ingredient for common skin and scalp issues.
Sebum control
Helps absorb and regulate excess oil, reducing shine and preventing clogged pores without stripping the skin barrier entirely.
Cons and cautions
Potential irritation
Sulfur can be drying and irritating, especially for sensitive or compromised skin. Redness and peeling are possible with overuse.
Strong odor
The sulfur component gives off a distinct 'rotten egg' smell that some find unpleasant, though modern formulations often mask it with fragrances.
Best for
- People with oily, acne-prone skin
- Those with dandruff or seborrheic dermatitis
Use caution if
- Individuals with very dry or sensitive skin
- Those allergic to sulfur or sulfonamide drugs
Usage tips
Safety summary
Generally safe for topical use in recommended concentrations, but can cause skin irritation, dryness, and allergic reactions in sensitive individuals. Avoid contact with eyes and broken skin. Patch test before widespread use.
Research notes
Clinical studies support sulfur's efficacy against acne and dandruff, with most evidence coming from dermatological trials on sulfur-based products. Specific data on sulfurized tea-ricinoleate is limited, but its mechanism aligns with well-established sulfur research.
Common label clues
- Typical concentration
- 0.5% to 3% in leave-on products; up to 5% in rinse-off products
- Regulatory status
- Approved as a cosmetic ingredient in the US and EU, with concentration limits typically under 5% for leave-on products. Not a drug ingredient, so it cannot claim to 'cure' acne.
- Common uses
- Acne treatments, Anti-dandruff shampoos, Oily skin cleansers
- Environmental note
- Sulfur is a natural element, but its processing into cosmetic ingredients may involve chemical reactions. No significant environmental concerns are widely reported for this specific compound.
Good to know
- Sulfur has been used in skincare for centuries, dating back to ancient Rome for treating skin conditions.
- This ingredient is often found in acne spot treatments and medicated shampoos rather than daily moisturizers.
Common questions
What is Sulfurized Tea-Ricinoleate in beauty products?
This ingredient is a blend of tea and castor oil that has been treated with sulfur. Sulfur is known for its ability to kill bacteria and fungi, and it also helps dry out excess oil on the skin. In skincare, it's used to treat acne and dandruff by targeting the microbes that contribute to these conditions. However, because sulfur can be drying and irritating, it's best for oily or acne-prone skin and should be used cautiously on sensitive or dry skin.
What does Sulfurized Tea-Ricinoleate do in a beauty product?
Sulfur in this ingredient breaks down into small particles that penetrate pores and kill acne-causing bacteria (like C. acnes) and fungi (like Malassezia). It also helps dissolve excess sebum and dead skin cells, reducing clogged pores and flaking.
Is Sulfurized Tea-Ricinoleate safe for most people?
Generally safe for topical use in recommended concentrations, but can cause skin irritation, dryness, and allergic reactions in sensitive individuals. Avoid contact with eyes and broken skin. Patch test before widespread use.
Who should be careful with Sulfurized Tea-Ricinoleate?
Individuals with very dry or sensitive skin Those allergic to sulfur or sulfonamide drugs
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.