Triclosan: What Happened When Regulators Took Action
Summary
Triclosan was removed from most US consumer antibacterial soaps by FDA rule in 2016 — not because it was acutely dangerous, but because it wasn't more effective than soap and water. Here's the full regulatory story and what it means when shopping.
Triclosan: What Happened When Regulators Took Action
Triclosan is an antimicrobial chemical that was, for decades, one of the most common active ingredients in consumer antibacterial products. It has since been the subject of significant regulatory action in the US, EU, and other markets — making it a useful case study in how ingredient science translates into policy, and what it means for shoppers.
What Is Triclosan?
Triclosan (INCI: Triclosan; CAS 3380-34-5) is a synthetic chlorinated aromatic compound with broad-spectrum antimicrobial activity. It works by inhibiting an enzyme (enoyl-acyl carrier protein reductase / FabI) involved in bacterial fatty acid synthesis — a mechanism of action that also raised concerns about its contribution to antibiotic resistance.
It was first registered as a pesticide in 1969 and subsequently adopted widely in consumer products for its antibacterial properties.
Regulatory Actions: A Timeline
The regulatory history of triclosan is one of the most extensive for any cosmetic/personal care ingredient:
2016 — US FDA Over-the-Counter (OTC) Monograph Final Rule: The FDA ruled that 19 active ingredients — including triclosan — could no longer be marketed in over-the-counter consumer antiseptic wash products (soaps, body washes) because manufacturers had not demonstrated they were both safe and more effective than plain soap and water. This effectively removed triclosan from most US consumer antibacterial soaps.
2017 — US FDA Health Care Antiseptics: A separate rule removed triclosan and other antimicrobials from healthcare antiseptic products pending further safety data.
EU Cosmetics Regulation: Triclosan is permitted in the EU in cosmetics only at restricted concentrations and in specific product categories:
- Toothpaste: maximum 0.3%
- Hand soap, body wash: maximum 0.3%
- Deodorant (non-spray): maximum 0.3%
- Face powder, blemish concealer: maximum 0.3%
- Nail product: maximum 0.3% It is prohibited in EU cosmetics in all other applications.
Canada: Health Canada banned triclosan in cosmetics in 2017.
Key finding driving regulation: The FDA and other bodies determined that antibacterial soaps containing triclosan were not demonstrably more effective than soap and water at reducing illness or preventing infection spread in community settings — removing the primary consumer benefit justification.
The Science Behind the Restrictions
Endocrine activity: In vitro and animal studies have demonstrated that triclosan can act as an endocrine-disrupting chemical, interfering with thyroid hormone signalling and oestrogen activity. The strength and human relevance of these findings at typical cosmetic exposure levels is debated, but regulators gave it weight in their assessment.
Antibiotic resistance: A significant concern driving regulatory action was evidence that triclosan use could contribute to cross-resistance to clinical antibiotics. The mechanism (targeting FabI) is shared with some antibiotic compounds, and lab studies demonstrated that triclosan exposure could reduce bacterial susceptibility to antibiotics including erythromycin and ciprofloxacin. This public health risk was factored into the FDA's 2016 rule.
Bioaccumulation: Triclosan has been detected in human blood, urine, and breast milk in population studies. A US NHANES analysis found triclosan in urine samples of approximately 75% of the general US population sampled prior to the FDA rule — reflecting the ingredient's historical ubiquity.
Where Triclosan Still Appears
Following regulatory action, triclosan has been removed from most consumer antibacterial soaps in the US and EU. However, it remains present in:
- Some toothpastes — Colgate Total has historically used triclosan at 0.3% for gingivitis control; Colgate has reformulated some variants but product availability varies by market
- Some EU-compliant cosmetics at restricted concentrations in permitted categories
- Medical and institutional settings — some surgical scrubs and healthcare products
- Some markets with less restrictive regulation
What to Look For When Shopping
On ingredient labels:
- Triclosan appears as Triclosan (INCI name)
- Also look for triclocarban — a related antimicrobial compound also removed from OTC antiseptic washes by the FDA 2016 rule
Simpler alternatives for hand hygiene:
- Plain soap and water for 20 seconds removes the majority of pathogens effectively — the FDA's own basis for removing triclosan from consumer soaps was that they offered no demonstrated advantage over this approach
- Hand sanitisers with ≥60% ethanol are effective for situations where soap and water is unavailable (WHO/CDC guidance)
Toothpaste:
- Most major toothpaste brands have reformulated or offer triclosan-free alternatives
- Look for toothpastes that list their active ingredients (fluoride-based products do not require triclosan for efficacy)
Certifications That Exclude Triclosan
- EWG Verified — prohibits triclosan in certified products
- MADE SAFE — screens against triclosan
- COSMOS — prohibits triclosan as it is not an approved preservative under the standard
ScoreKart flags triclosan in scanned personal care products along with its current regulatory status in the US and EU, so you can see at a glance whether a product falls within or outside regulatory restrictions.
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