Ingredient review
Cloflucarban
INCI: Cloflucarban
Cloflucarban is an effective antimicrobial but has raised safety concerns similar to triclosan, leading to restricted use in some regions.
In plain English
Cloflucarban is a man-made chemical added to soaps and deodorants to kill bacteria. It works by disrupting the cell walls of microbes, which helps reduce body odor and prevent the spread of germs. However, like similar ingredients (e.g., triclosan), it has been scrutinized for potential hormonal effects and environmental persistence, so its use has declined in many consumer products.
Review score
Safety, usefulness, and evidence
Higher-caution ingredient
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
Read the cautions before using
Cloflucarban 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 Cloflucarban.
- 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 chlorinated carbanilide compound with broad-spectrum antimicrobial activity, structurally related to triclosan.
How it works
Cloflucarban inhibits bacterial fatty acid synthesis by targeting the enoyl-acyl carrier protein reductase enzyme, effectively stopping bacterial growth and reproduction on the skin surface.
Pros
Effective germ fighter
Cloflucarban quickly reduces bacteria on skin, which can help control body odor and may lower the risk of superficial skin infections.
Long shelf life
As a preservative booster, it helps keep products fresh longer by preventing microbial growth in the formula.
Cons and cautions
Safety concerns
Animal studies suggest cloflucarban may interfere with thyroid hormone regulation, leading to regulatory restrictions in some countries.
Environmental impact
This compound can accumulate in waterways and soil, potentially harming aquatic life and contributing to antibiotic resistance.
Best for
- People seeking extra antimicrobial protection in rinse-off cleansers
- Those who prefer traditional antibacterial bar soaps
Use caution if
- Individuals with sensitive or eczema-prone skin
- Anyone concerned about potential hormone-disrupting chemicals
Usage tips
Safety summary
Cloflucarban is considered safe in low concentrations for short-term use, but long-term safety data is limited. Regulatory agencies have flagged potential endocrine effects, and it is not recommended for daily leave-on products.
Research notes
Research shows cloflucarban is an effective antimicrobial, but animal studies indicate possible thyroid disruption. Human data is sparse, and most safety conclusions are extrapolated from studies on similar compounds like triclosan.
Common label clues
- Typical concentration
- 0.1% to 0.3% in rinse-off products
- Regulatory status
- Cloflucarban is not currently banned by the U.S. FDA, but it is not among the 19 ingredients allowed in over-the-counter antiseptic washes under the 2016 FDA rule. Its use has declined voluntarily.
- Common uses
- Bar soaps, Deodorants, Antibacterial cleansers
- Environmental note
- Cloflucarban is persistent in the environment and has been detected in wastewater and sediment, raising concerns about its impact on aquatic ecosystems.
Good to know
- Cloflucarban is rarely used in modern skincare; many brands have phased it out in favor of gentler preservatives.
- It is sometimes listed under the trade name Irgasan CF3 on ingredient labels.
Common questions
What is Cloflucarban in beauty products?
Cloflucarban is a man-made chemical added to soaps and deodorants to kill bacteria. It works by disrupting the cell walls of microbes, which helps reduce body odor and prevent the spread of germs. However, like similar ingredients (e.g., triclosan), it has been scrutinized for potential hormonal effects and environmental persistence, so its use has declined in many consumer products.
What does Cloflucarban do in a beauty product?
Cloflucarban inhibits bacterial fatty acid synthesis by targeting the enoyl-acyl carrier protein reductase enzyme, effectively stopping bacterial growth and reproduction on the skin surface.
Is Cloflucarban safe for most people?
Cloflucarban is considered safe in low concentrations for short-term use, but long-term safety data is limited. Regulatory agencies have flagged potential endocrine effects, and it is not recommended for daily leave-on products.
Who should be careful with Cloflucarban?
Individuals with sensitive or eczema-prone skin Anyone concerned about potential hormone-disrupting chemicals
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.