Ingredient review
Sodium Bischlorophenyl Sulfamine
INCI: Sodium Bischlorophenyl Sulfamine
A synthetic antimicrobial that can help preserve products and target acne-causing bacteria, but may cause irritation for sensitive skin.
In plain English
Sodium Bischlorophenyl Sulfamine is a lab-made ingredient that fights bacteria in skincare products. It is sometimes added to help preserve the formula or to target bacteria that contribute to acne. Because it is a strong antimicrobial, it can be effective but may also be drying or irritating, especially for people with sensitive or reactive 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
- synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Sodium Bischlorophenyl Sulfamine 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 Sodium Bischlorophenyl Sulfamine.
- 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 synthetic sulfonamide compound with antimicrobial properties, used in cosmetics as a preservative and to help control certain bacteria on the skin.
How it works
It works by disrupting the growth and reproduction of bacteria, including those linked to acne (like Cutibacterium acnes). In a product, it helps keep the formula stable and free from microbial contamination while also providing a mild antibacterial effect on the skin.
Pros
Effective preservative
Helps keep products free from harmful microbes, extending their shelf life and safety.
Targets acne bacteria
Can help reduce the population of acne-causing bacteria on the skin, which may improve breakouts.
Cons and cautions
May irritate sensitive skin
As a strong antimicrobial, it can cause redness, stinging, or dryness, especially for those with compromised skin barriers.
Limited research on long-term use
There is not extensive published research on its effects with daily, long-term cosmetic use compared to more common ingredients.
Best for
- People with oily or acne-prone skin looking for antibacterial support
- Those who tolerate synthetic preservatives well
Use caution if
- Individuals with very sensitive or reactive skin
- Anyone with a known sulfonamide allergy (though rare in cosmetics)
Usage tips
Safety summary
Generally considered safe at low concentrations in cosmetics, but can cause irritation in sensitive individuals. Avoid if you have a known sulfonamide allergy.
Research notes
Moderate evidence supports its antimicrobial efficacy in vitro. Few human studies exist specifically for cosmetic use; most data come from broader antimicrobial research.
Common label clues
- Typical concentration
- Typically used at 0.1% to 0.5%
- Regulatory status
- Approved for use in cosmetics in the US and EU within regulated concentration limits. Not a drug ingredient.
- Common uses
- Cleansers, Leave-on products, Acne treatments
- Environmental note
- As a synthetic antimicrobial, its environmental persistence is not well studied; it is not known to be biodegradable.
Good to know
- This ingredient is not as widely used as parabens or phenoxyethanol, so it may appear in niche or prescription-style products.
- It is not a sulfa drug, but people with sulfonamide allergies should still exercise caution.
Common questions
What is Sodium Bischlorophenyl Sulfamine in beauty products?
Sodium Bischlorophenyl Sulfamine is a lab-made ingredient that fights bacteria in skincare products. It is sometimes added to help preserve the formula or to target bacteria that contribute to acne. Because it is a strong antimicrobial, it can be effective but may also be drying or irritating, especially for people with sensitive or reactive skin.
What does Sodium Bischlorophenyl Sulfamine do in a beauty product?
It works by disrupting the growth and reproduction of bacteria, including those linked to acne (like Cutibacterium acnes). In a product, it helps keep the formula stable and free from microbial contamination while also providing a mild antibacterial effect on the skin.
Is Sodium Bischlorophenyl Sulfamine safe for most people?
Generally considered safe at low concentrations in cosmetics, but can cause irritation in sensitive individuals. Avoid if you have a known sulfonamide allergy.
Who should be careful with Sodium Bischlorophenyl Sulfamine?
Individuals with very sensitive or reactive skin Anyone with a known sulfonamide allergy (though rare in cosmetics)
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.