Triclosan

Benefits
Antiseptic
Concerns
Reef Harmful

What is Triclosan?

Triclosan is a synthetic chlorinated phenolic compound, chemically known as 5-chloro-2-(2,4-dichlorophenoxy)phenol, developed in the 1960s for its broad-spectrum antimicrobial properties. In cosmetics, it appears mainly in personal care products like deodorants, toothpastes, and soaps, where concentrations typically stay below regulatory limits. It functions by targeting bacterial enzymes, specifically inhibiting fatty acid synthesis essential for microbial cell membranes, thereby reducing bacterial and fungal growth. This action helps maintain product integrity against contamination and controls odor-causing microbes on skin. While effective at low levels, its use has declined due to regulatory scrutiny over potential health and ecological impacts, leading to restrictions in various regions.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 7 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Biocide
Destroys or inhibits harmful organisms to preserve products.
Deodorant agent
Targets malodor by neutralizing odor molecules, inhibiting odor-causing microbes, or adding fragrance notes to improve underarm and body freshness.
Preservative
Protects the product from microbial contamination during storage and use, helping maintain safety, stability, and shelf life.
Deodorant
Helps control body odor by reducing odor-causing bacteria and/or neutralizing or masking malodor, without necessarily reducing sweat production.

Benefits

Offers broad antimicrobial action to protect formulations from microbes.

Helps manage body odor by targeting bacteria in deodorant products.

Supports product stability as a preservative during use and storage.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals seeking odor control in deodorants.
Those with sensitive skin prone to irritation.
Users of products requiring microbial protection.
Individuals concerned about endocrine disruption risks.
People with active lifestyles needing freshness support.
Eco-conscious users avoiding reef-damaging ingredients.

Safety Notes

  • Rated high hazard by some databases due to potential health and environmental effects.
  • Banned or restricted in certain consumer products by regulators like FDA.

Frequently Asked Questions about Triclosan

What does triclosan do in skincare?

It acts as an antimicrobial agent, inhibiting bacteria to preserve products and control odor.

Is triclosan safe for skin?

It has restrictions due to potential health risks; check product labels and regulations.

Does triclosan harm the environment?

Evidence indicates toxicity to aquatic life, including coral reefs.