Hexachlorophene

Quick links to important sections

Hexachlorophene

Treatment option:

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Hexachlorophene

Property Description
Active ingredient Hexachlorophene
Form Solutions, creams, cleansers, powders
Pharmacological class Topical anti-infective agent; Antiseptic
Common use Skin antisepsis and bacterial control
Origin Synthetic (halogenated bisphenol)

The Definition and Pharmacological Classification of Hexachlorophene

Hexachlorophene is a potent synthetic compound classified as an antiseptic and topical anti-infective agent. It belongs to the chemical class of halogenated bisphenols and is primarily utilized for sustained control of bacteria on external skin surfaces. This compound functions as a bacteriostatic agent, meaning its purpose is to inhibit the growth and reproduction of bacteria rather than instantly destroying them.

The active ingredient is solely Hexachlorophene, also known chemically as bis(2-hydroxy-3,5,6-trichlorophenyl)methane. This compound is specifically recognized in pharmacological studies for its marked efficacy against gram-positive bacteria, which is critical for reducing the risk of contamination and supporting general skin antisepsis in controlled environments.

Available Forms and Differentiation

Hexachlorophene is prepared for use in various dosage forms for the topical route of administration, including solutions, creams, and specialized cleansing preparations. These forms are often incorporated into a detergent or soap base to create bacteriostatic skin cleansers, formerly marketed under names like Phisohex.

This compound is established for professional infection control practices, such as surgical scrubbing or handwashing in patient care. This status confirms its utility in environments requiring stringent microbial control, differentiating it from general consumer hand soaps.

General Purpose and Unique Action Against Bacteria

Its general purpose is to provide persistent residual action in environments where low bacterial counts must be maintained, such as pre-surgical preparation. This unique property, known as skin substantivity, means the antibacterial residue binds firmly to the skin and remains active for an extended period after rinsing. The substance works by interfering with crucial bacterial enzyme systems and the integrity of the bacterial cell membranes, thus establishing a continuous barrier against the proliferation of bacteria.

What side effects are possible with Hexachlorophene?

Possible Side Effects and Safety Information

The safety profile of Hexachlorophene is defined by two primary categories of adverse reactions: local effects on the skin and the risk of systemic toxicity resulting from absorption.

Serious Adverse Reactions and Systemic Risks

The most significant documented risk is systemic neurotoxicity resulting from the absorption of the compound through the skin. This can lead to serious central nervous system effects, including vacuolar encephalopathy of the brain stem, convulsions, dizziness, and in severe cases, permanent damage such as blindness or coma. Symptoms of systemic toxicity may be delayed up to 48 hours following exposure.

Common Adverse Reactions

Adverse effects commonly listed in regulatory documents involve the skin and subcutaneous tissues. These include localized skin irritation, redness, dryness, and scaling. Other reactions may include photosensitivity (increased sensitivity to sunlight), stinging, and mild swelling. Severe skin reactions such as blistering and crusting have been documented, though their frequency is not precisely known.

Population-Specific Safety Considerations

Official regulatory documents emphasize that use is not recommended in infants and premature babies due to a significantly increased risk of systemic absorption and serious neurological effects. Individuals with broken, damaged, or burned skin are also at a high risk of rapid systemic absorption leading to toxicity. Regulatory texts caution against use in pregnant and breastfeeding individuals due to the substance being embryotoxic and teratogenic in animal studies.

Safety-Related Restrictions

To mitigate the risk of absorption, the product must not be used on large areas of damaged skin or in ways that promote absorption, such as an occlusive dressing or wet pack. Use on mucous membranes is also prohibited to prevent severe local damage and systemic uptake.

Overdose and Emergency Response

Overdose and when to seek help

Documented Manifestations and Severe Outcomes

Overexposure to Hexachlorophene, primarily through accidental ingestion or significant topical absorption across compromised skin (such as burns or denuded areas), leads to documented systemic toxicity. Officially reported manifestations include gastrointestinal distress (vomiting, diarrhea, abdominal cramps) and systemic effects such as hypotension, dehydration, and central nervous system disturbances, including confusion, dizziness, and convulsions.

The regulatory profile identifies the critical risks of severe neurotoxicity and reported fatal outcomes, necessitating an urgent response.

When Immediate Medical Help is Required

Immediate medical attention is required upon any known or suspected overexposure. This urgency is mandated because toxicity may be severe, and symptoms can be delayed up to 48 hours. Specific high-risk populations, including infants—who may exhibit severe signs like decerebrate rigidity and clonic muscular contractions—must be prioritized for urgent referral.

Emergency Management and Monitoring

Management is defined as symptomatic and supportive treatment, as regulatory documents state no specific antidote is known. For accidental ingestion, the administration of activated charcoal is an officially described supportive measure. Close medical observation is necessary to monitor the patient's nervous system, eye function, and overall systemic stability.

Therapeutic Uses of Hexachlorophene

What Hexachlorophene Treats: Main Uses and Benefits

The primary therapeutic use of this agent is rooted in its application as a persistent bacteriostatic skin cleanser.

Primary Support for Preoperative Infection Prevention

This agent is generally used to help address the high risk of bacterial contamination applicable in clinical settings, particularly before surgical or invasive procedures. The key therapeutic benefit is the reduction of microbial flora on the skin, which lowers the potential for surgical site infections and supports the patient during preparation for a procedure. It is commonly used when short-term symptomatic assistance in achieving optimal external antisepsis is appropriate.

“The agent's main benefit is in providing a persistent, yet external, hygienic measure that supports microbial control efforts.”

Sustained Control and Clinical Applications

Hexachlorophene is considered relevant in situations that demand the sustained control of bacterial colonization, specifically against challenging gram-positive organisms. It offers the benefit of persistent residual action on the skin surface, a relevant measure in managing the overall bacterial load and may assist with mitigating the risk of pathogen transmission, especially in high-traffic clinical environments. Its use is commonly observed in contexts requiring surgical scrubbing, patient care handwashing, and management of gram-positive infection outbreaks.

Intervention in Outbreak Management Scenarios

The cleanser is applied as a specialized hygiene measure to help break the cycle of contagion and supports efforts to maintain stability in the health environment during outbreaks of gram-positive infection. Its benefit lies in providing strong external antiseptic support to staff and patients, assisting clinical teams in managing challenging situations, which generally contributes to easing the overall symptom load associated with widespread contagion risk.


Quick Fact: Relief for Contamination Risk This product provides supportive relief by lowering the count of bacteria on the skin, and supports efforts to maintain functional stability in clinical hygiene protocols.

Eligibility and Restrictions for Use

Hexachlorophene eligibility is strictly defined by regulatory agencies to minimize the risk of systemic absorption and associated toxicity. Use is contraindicated and explicitly prohibited in several key populations.

Eligibility Restrictions

Population / Condition Regulatory Status
Infants and Premature Babies Contraindicated for routine prophylactic total body bathing.
Burned or Denuded Skin Contraindicated for application.
Mucous Membranes / Occlusion Contraindicated for use (e.g., vaginal pack, under dressings).
Pregnancy Category C. Use only if benefit justifies fetal risk.
Lactation Not recommended.
Generalized Dermatoses Use only with caution (e.g., ichthyosis congenita).

Eligible Populations

Hexachlorophene is approved for use as a bacteriostatic skin cleanser in adults and older children with intact skin for professional infection control practices, such as surgical scrubbing or handwashing. Use in geriatric patients is generally permitted, though the presence of underlying skin or circulatory conditions warrants caution. The regulatory profile imposes these constraints to limit exposure to intact skin surfaces only.

What should I know about interactions with other medicines?

Topical hexachlorophene is primarily intended for use as a skin cleanser, and its potential for interaction with other medications is generally low. However, precautions should be taken to minimize the risk of systemic absorption and potential skin reactions when used alongside other products.

Potential Drug and Product Interactions

Type of Interaction Agent Clinical Implication
Drug-Drug Methoxsalen (topical or systemic) Risk of enhanced photosensitivity. Both agents can increase skin sensitivity to sunlight.
Product-Product Other topical agents containing alcohol May decrease the antibacterial effectiveness of hexachlorophene and potentially lead to excessive skin dryness or irritation.
Use-Related Other topical antiseptics or disinfectants May lead to cumulative skin irritation or a potential increase in systemic absorption and toxicity.

Important Considerations for Use

Hexachlorophene is absorbed through the skin, especially if applied to burned or severely damaged skin (e.g., open wounds, denuded skin, or certain dermatological conditions like ichthyosis congenita), which can lead to detectable blood levels and potential neurotoxicity. This increased dermal absorption risk is considered a disease interaction. Thorough rinsing after use is crucial to remove any residue and prevent prolonged exposure or interaction with residual substances. Patients should inform their healthcare provider of all other topical and oral medications, herbal supplements, and skin care products being used to properly assess any potential risks.

Mechanism of Action

How Hexachlorophene Works

Hexachlorophene operates via a dual mode of action targeting the internal stability of bacteria, particularly Gram-positive species. The molecule’s lipophilic structure causes it to insert into the bacterial cell membrane, compromising its structural integrity and causing the leakage of essential potassium ions. Concurrently, the molecule acts as an inhibitor against critical membrane-bound respiratory enzymes, such as D-lactate dehydrogenase, effectively blocking the production of ATP required for cellular function and growth. This cascade results in a bacteriostatic effect—the targeted inhibition of proliferation.

Beyond cellular interference, the mechanism is defined by the compound's strong binding to the lipids of the stratum corneum (outer skin layer). This substantivity allows an active, growth-inhibiting residue to remain on the surface even after rinsing. This persistence results in a sustained reduction in bacterial proliferation, counteracting the typical microbial rebound that occurs with agents lacking this property.

However, the functional range of the mechanism is constrained; it results in a lower degree of functional activity against Gram-negative bacteria because their protective outer membrane severely restricts the molecule's access to its internal targets. Additionally, the inhibitory activity is diminished by the presence of high concentrations of organic material.

Dosage and Administration Information

Official Administration Protocol

Hexachlorophene is administered strictly via the topical route as a 3% bacteriostatic skin cleanser. Its use is generally restricted to controlled clinical environments for procedural handwashing and surgical scrubbing, and is not intended for routine, general-purpose consumer use.


Dosing and Administration Regimens

The required application volume for cleansing is typically 5 mL of the emulsion, and the intended action depends on the cumulative effect achieved through repeated use. The standard administration technique involves specific time constraints and preparation steps:

  • Surgical Scrub (Initial): The protocol requires two sequential 3-minute scrub applications, each utilizing 5 mL of the product, followed by a complete rinsing after each application.
  • Surgical Scrub (Repeat): For subsequent scrubbing during the day, the procedure is simplified to a single 3-minute scrub using 5 mL.

Procedural and Population Constraints

Correct preparation is mandatory, requiring the product to be applied to wet hands or skin and worked into a copious lather by adding small amounts of water. The application must be followed by thorough rinsing under running water. Adherence to the proper rinsing technique is essential for the use of the product.

Use of Hexachlorophene is subject to specific constraints regarding the application area and population:

Constraint Type Official Instruction
Application Must not be used as an occlusive dressing, wet pack, or lotion.
Infants Use is not recommended and must be strictly avoided for bathing infants.
Duration Use is prescribed only as long as necessary for infection control within outbreak management scenarios.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Hexachlorophene

Evidence for Use in Surgical and Patient Care Hand Antisepsis

Research has primarily focused on evaluating Hexachlorophene's application as a skin cleanser for staff in clinical settings. Studies explored its use in standardized hygiene protocols, such as surgical scrubbing and patient care handwashing. These controlled efficacy trials examined outcomes such as the magnitude of reduction in resident and transient microbial flora (bacterial counts) in adult populations. Studies reported measurements of cumulative changes in bacterial counts with repeated use, and findings described patterns where an extended presence of antibacterial activity was observed in some studies. However, research describes the agent as primarily being studied for a narrow spectrum, with limited data regarding its action against a full range of Gram-negative bacterial species.

Evidence for Use in Outbreak Control of Gram-Positive Infections

Hexachlorophene was evaluated in research contexts involving its use as an auxiliary hygiene measure during outbreaks of Gram-positive infection within institutions. The evidence derived from these settings often takes the form of observational studies and clinical surveys where the agent was studied for its role in managing the overall bacterial load. Because the study designs do not always align with modern randomized controlled trial standards, certainty remains low when drawing conclusions from non-comparative research designs, and results apply only to the specific, highly controlled populations studied.

Long-Term Studies and Durability of Effect

Research exploring the utility of Hexachlorophene was evaluated in contexts that typically focused on short-term symptom changes over defined time intervals. Follow-up durations were limited, often covering periods of one to eight weeks to assess the cumulative effect that was observed in studies attempting a steady state of bacterial reduction. There is limited information for long-term outcomes regarding the sustained lowering of bacterial counts or the durability of the residual antibacterial effect once the product's use is discontinued.

Evidence in Specific Population Groups and Gaps

The majority of evidence for the regulated uses of the agent involved adults. However, historical studies involving neonatal and infant populations led to subsequent limitations and restrictions on its use. Consequently, data for certain groups remain insufficient for modern-day general application. Key uncertainties in the broader research record include the narrow antimicrobial spectrum and the lack of comprehensive comparative evidence when examining its performance against contemporary alternatives in modern trials.

Frequently Asked Questions (FAQ)

Common questions about Hexachlorophene (FAQ)


Q: Are there any long-term effects of using Hexachlorophene products?

A: Regulatory warnings indicate that prolonged or repeated exposure to Hexachlorophene may lead to chronic health effects, and is associated with severe outcomes such as blindness or paralysis. Official regulatory texts describe use as generally restricted to durations only as long as necessary for infection control, such as during outbreak management scenarios.


Q: How quickly does Hexachlorophene start working after the first use?

A: Official product information notes that Hexachlorophene is a bacteriostatic agent, meaning it works by inhibiting bacterial growth rather than rapidly destroying the bacteria. Its full effectiveness is achieved through a cumulative antibacterial action that develops with repeated use, building on the product’s residual activity left on the skin.


Q: Is it safe to use Hexachlorophene if I have sensitive skin?

A: Official documentation states that Hexachlorophene should not be used by persons with a known sensitivity to any of its components. Even in approved users, the official list of adverse reactions includes common skin reactions like redness, dryness, or scaling, which may occur especially in people with highly sensitive skin. If you have skin sensitivity, the product may not be appropriate.


Q: What is the meaning of the boxed warning often mentioned with Hexachlorophene?

A: The FDA immediate container label requires a Special Warning to be prominently displayed on the product. The warning outlines that the compound may be toxic if used other than as directed. It also calls for thorough rinsing after use and emphasizes the importance of monitoring for potential signs of toxicity.


Q: Is Hexachlorophene still used widely in medical settings?

A: Official labeling restricts Hexachlorophene’s use to specialized settings where stringent infection control is needed. It is indicated as a bacteriostatic skin cleanser for professional uses, such as surgical scrubbing or handwashing during patient care, and to help control outbreaks of certain Gram-positive infections.


Q: What official safety classifications are given to Hexachlorophene?

A: In the United States, Hexachlorophene is officially classified by the FDA as Pregnancy Category C, meaning use is only considered if the potential benefit justifies the potential risk to the fetus. It is also listed as a regulated hazardous substance by several agencies, reflecting its known toxicity profile.


Q: What happens if I use Hexachlorophene too frequently?

A: Official regulatory documents state that the product should not be used more often or for a longer duration than prescribed, as Hexachlorophene is absorbed through the skin. Using it too frequently increases the risk of developing toxic levels in the blood, which can lead to serious effects on the central nervous system.


Q: Is Hexachlorophene banned in certain forms or concentrations?

A: Regulatory guidance specifies that Hexachlorophene is generally restricted to prescription-only drug products. Over-the-counter (OTC) products and cosmetics may only contain it as a preservative at a maximum level of 0.1% and must not be used on mucous membranes. Use of higher concentrations is typically reserved for controlled clinical use.


Q: Why is Hexachlorophene only available by prescription in some countries?

A: Regulatory agencies, such as the FDA, determined that Hexachlorophene was not proven to be safe and effective for general, unrestricted use by consumers. Consequently, its distribution was restricted to be available only through prescription to ensure its use is monitored and limited to defined professional purposes.


Q: Is Hexachlorophene the same thing as chlorhexidine?

A: These are two different active chemical compounds, although both are used as antiseptics. Official information identifies Hexachlorophene as a halogenated bisphenol, while chlorhexidine belongs to a different chemical class (a bisbiguanide).


Q: What happens if Hexachlorophene is swallowed?

A: Official warnings state that accidental ingestion of Hexachlorophene is harmful and has been reported as fatal, particularly in children. Swallowing even small amounts can lead to serious toxic effects, including loss of appetite, abdominal cramps, vomiting, diarrhea, and convulsions.


Q: Can a person be allergic to Hexachlorophene?

A: Official regulatory documents caution that Hexachlorophene should not be used by individuals with a known sensitivity to any of its components. Additionally, some individuals have reported developing photo-allergy or asthma-like sensitivity to this compound or related substances.


Q: Can people who have kidney problems use Hexachlorophene?

A: Official guidance notes that medical issues such as age-related kidney or liver problems may require caution when using this product. This is due to Hexachlorophene’s absorption through the skin and the potential for high exposure to affect the kidneys.


Q: What are the non-drug ingredients in Hexachlorophene products?

A: The prescription emulsion form is officially described as a stable colloidal dispersion. The product base often includes other components such as entsufon sodium, petrolatum, lanolin cholesterols, and methylcellulose to create the final cleaning preparation.


Q: How does the concentration of Hexachlorophene affect its action?

A: The potential for Hexachlorophene to cause toxicity is considered dose-dependent. While the regulated prescription product is a 3% concentration, historical examples show that higher concentrations, such as a 6% powder used previously in infants, were linked to significantly increased risk of serious neurotoxicity.

How should Hexachlorophene be stored and disposed of?

Storage and Disposal Requirements

Official regulatory guidance mandates specific conditions for storing and disposing of Hexachlorophene to maintain its stability and ensure safety.

Storage and Handling Rule Official Requirement
Temperature Store at controlled room temperature (15 to 30 C).
Protection Store protected from light and away from heat and moisture.
Prohibition Keep from freezing and do not store in containers with ordinary metal parts.
Child Safety Keep this and all drugs out of the reach of children.

For disposal, throw away any unused medicine after the expiration date. Unused or expired product should be mixed with an undesirable substance (e.g., dirt) in a sealed container and placed in the trash according to official guidance. The substance must not be released into the environment, as it is classified as very toxic to aquatic life, requiring careful disposal.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

Equivalent of Hexachlorophene found in:

A-Z Index: