Clear Shampoo

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Clear Shampoo

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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 Clear Shampoo

Quick Facts

Property Description
Active ingredient Ketoconazole
Form Aqueous Suspension (Shampoo)
Pharmacological class Antifungal Drug (Azole Antimycotic)
General purpose Localized control of fungal/yeast proliferation
Origin Synthetic imidazole derivative

What Type of Medicine is Clear Shampoo and What is its Composition?

Clear Shampoo is fundamentally a medicated preparation defined by its primary chemical component, Ketoconazole, which is recognized as a synthetic broad-spectrum antifungal drug. The compound is an established member of the azole group of antimycotics and functions as a single-agent product. Its classification stems from its mechanism of action, which involves interfering with the synthesis of ergosterol, a vital component required for maintaining the structure of fungal cell membranes. This derivative possesses inhibitory action against a wide spectrum of susceptible microorganisms. Ketoconazole belongs to the class of antifungal medications called imidazoles, which work by slowing the growth of fungi.

Clear Shampoo's Pharmaceutical Form and General Purpose

The pharmaceutical identity of Clear Shampoo is a topical formulation presented as an aqueous suspension within a shampoo base, ensuring a topical route of administration. This dosage form is specifically engineered to maximize the local concentration of Ketoconazole directly on the affected skin or scalp. As a dermatological preparation, the product is typically classified as an over-the-counter (OTC) medicine depending on the specific concentration, primarily marketed for use by adult patient groups. The general purpose of utilizing this specialized form is to provide localized management and relief, often for surface issues linked to yeast overgrowth. Topical Ketoconazole formulations, including shampoos, are utilized for maintaining surface microbial control. Therefore, the use of this suspension provides a direct, patient-accessible method for managing the presence of these organisms.

Regulatory References

  1. MedlinePlus
  2. NIH StatPearls

What side effects are possible with Clear Shampoo?

Possible Side Effects and Safety Information

The safety profile for this topical medicated preparation, whose active ingredient is Ketoconazole, is derived from official regulatory documents, which classify documented adverse reactions primarily by incidence rate and affected body system. Based on regulatory clinical trial data, no adverse reactions are classified as Very Common or Common (incidence ge 1%).


Adverse Reactions and System Classification

Adverse effects are most often localized and fall into the Uncommon (ge 1/1,000 to <1/100) or Rare (ge 1/10,000 to <1/1,000) frequency categories. The primary System Organ Classes involved are Skin and Subcutaneous Tissue Disorders and General Disorders and Administration Site Conditions. Examples of documented effects include application site irritation, pruritus, erythema, folliculitis, and dry skin.

Serious Adverse Reactions and Restrictions

Post-marketing surveillance reports list serious adverse reactions classified under Immune System Disorders, notably severe hypersensitivity reactions such as anaphylaxis and angioedema. The preparation is strictly contraindicated in individuals with a known hypersensitivity to Ketoconazole or any of its excipients. The label also requires avoiding contact with the eyes and mucous membranes due to the potential for irritation.

Population-Specific Safety Notes

The product is classified by the FDA as Pregnancy Category C, meaning use requires careful consideration where the potential benefit may outweigh the potential risk to the fetus. The safety and effectiveness of the shampoo have not been established for pediatric use.

Overdose and Emergency Response

Overdose and when to seek help

The official overdose profile for this medicated shampoo, which contains Ketoconazole, is primarily concerned with the scenario of accidental oral ingestion of the liquid formulation, as negligible systemic absorption occurs through the topical route. Regulatory documentation provides clear guidance on the management and required emergency actions for this event.

Feature Official Regulatory Statement
Documented Overdose Presentation Symptoms following accidental oral ingestion may include gastrointestinal distress, characterized by nausea and vomiting [FDA, EMA].
Emergency Action Required Seek immediate medical attention and contact a doctor or poison control center right away upon confirmed or suspected accidental ingestion [FDA label].
Management Strategy Management is restricted to symptomatic and supportive treatment, as no specific antidote is known for Ketoconazole overdose [EMA SmPC].
Procedural Caution Emesis (induced vomiting) and gastric lavage are strictly prohibited due to the significant risk of pulmonary aspiration of the liquid formulation [FDA, EMA].

The regulatory guidance mandates that accidental oral ingestion is treated as an emergency situation requiring professional care. This defines the management structure: stabilization through supportive measures, combined with the specific contraindication of procedures that increase the aspiration hazard.

Therapeutic Uses of Clear Shampoo

What Clear Shampoo Treats: Main Uses and Benefits

Clear shampoo is commonly used to help manage symptoms related to the common and chronic scalp condition known as dandruff. It may also assist with symptom management for seborrheic dermatitis, a condition characterized by periods of heightened symptoms. The therapeutic areas are applicable within clinical settings that involve acute or disruptive symptom patterns, often used when symptoms become more noticeable.

The product is relevant for easing symptoms related to flaking, scaling, and itching of the scalp, providing support that helps ease the overall symptom burden. It is commonly used in settings marked by temporary physiological imbalance where additional management of discomfort is required, and it contributes to improved comfort during symptomatic periods.

The therapeutic benefit supports general well-being during symptomatic phases and helps maintain a sense of stability when symptoms are more noticeable.


Quick Fact: Symptom Management for Dandruff The shampoo is applied across domains where additional symptomatic support is needed and contributes to improved comfort during symptomatic periods.

Eligibility and Restrictions for Use

Who can and cannot use Clear Shampoo?

The population eligibility for Clear Shampoo (Topical Ketoconazole) is strictly defined by regulatory documentation, which focuses on absolute contraindications and established use across age groups.


Eligibility Status by Population

Status Population/Condition
Contraindicated Persons with a known hypersensitivity to ketoconazole or any component of the shampoo formulation.
Permitted Use Adults and adolescents 12 years of age and older.
Use Not Established Children younger than 12 years of age; safety and effectiveness have not been officially established for this group.
Conditional Use Pregnant women (Category C) and nursing mothers; use is permitted only if the potential benefit justifies the potential risk.

Eligibility-Related Restrictions

Use is restricted from application to any skin area that is broken or inflamed, such as the scalp with cuts, scrapes, or burns. For systemic conditions, no specific eligibility limitations related to hepatic or renal impairment are documented for the topical shampoo, due to its minimal systemic absorption.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory interaction profile for Clear Shampoo is fundamentally determined by its topical formulation. Government documents, including those from the U.S. FDA and the European Medicines Agency (EMA), consistently state that the systemic absorption of the active ingredient, Ketoconazole, is minimal.

Following topical application, plasma concentrations are typically undetectable or below the limit of quantitation. This negligible systemic exposure dictates the product's interaction structure and reduces the risk of systemic complications.

Systemic Drug-Drug Interaction Risk

Regulatory labeling establishes that clinically significant systemic drug-drug interactions are not anticipated with this topical shampoo formulation. Because the concentration of Ketoconazole in the body is too low, concerns regarding classic systemic interaction mechanisms—suchas those involving cytochrome P450 enzymes (e.g., CYP3A4 inhibition) or drug transport proteins—are not documented as applicable risks for the topical product.

Contraindicated Combinations and Restrictions

Due to the minimal systemic risk, regulatory labeling does not list specific interacting medicinal products, nor are any combinations formally classified as contraindicated when co-administered. There are no mandatory timing-based separation requirements documented for administering this shampoo apart from other oral medicines. Furthermore, the official profile confirms there are no documented interactions with food, alcohol, or herbal supplements for this product.

Mechanism of Action

The mechanism of action for Ketoconazole is a targeted antifungal process defined by its ability to interfere with the fungal organism's essential metabolic pathways.

Fungal Sterol Synthesis Inhibition

The drug functions primarily as a non-competitive inhibitor of the fungal enzyme Cytochrome P450 14alpha-demethylase (CYP51A1). This molecular action blocks the ergosterol biosynthesis pathway , a pathway involved in the synthesis of ergosterol, the key stabilizing lipid in fungal cell membranes. This mechanism directly leads to the fungistatic suppression and ultimately leads to fungal cell lysis and population density reduction.

Modulation of Microbial-Driven Irritation

The mechanistic consequence of fungal inhibition is a secondary physiological effect. By reducing the population density of Malassezia, the mechanism reduces the fungal organism's ability to produce and release irritating free fatty acids onto the epidermis. This leads to a reduction in localized inflammatory pathway signaling and consequently alters the rate of epidermal cell proliferation.

Dosage and Administration Information

How to Use Clear Shampoo

The usage of this product is based on established protocols for the topical application of its active ingredient, Ketoconazole. This preparation is strictly for cutaneous use on the skin or scalp and must not be used orally or in the eyes.

Administration Regimens and Frequency

The two available strengths, 1% and 2%, are associated with distinct usage schedules. For the treatment of conditions like seborrheic dermatitis, the 2% strength is typically applied twice weekly for an initial period of two to four weeks. For pityriasis versicolor, the protocol requires a once-daily application for a shorter course of one to five days. Following the initial treatment period, protocols define a maintenance phase, where the product may be used intermittently, generally once every one to two weeks, to help sustain the treatment pattern.

Procedural Instructions

Proper administration involves applying a sufficient amount of shampoo (approximately a palmful) to the affected area, generating a lather. Critically, the lather must remain in contact with the skin for 3 to 5 minutes before being thoroughly rinsed with water. For patients transitioning from potent topical corticosteroid treatments, the steroid should be gradually withdrawn over a period of two to three weeks upon starting the shampoo, to manage the potential for a rebound phenomenon.

Population-Specific Rules

The product is intended for use in adults and adolescents. Usage in pediatric patients under 12 years of age is not part of the standard usage protocol and must be determined by a healthcare provider.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Clear Shampoo

Evidence for use in Dandruff (Scalp Scaling, Flaking, and Itching)

The primary evidence available for Clear Shampoo research examined its use for conditions characterized by symptoms of dandruff, a condition characterized by fluctuating or episodic manifestations of flaking, scaling, and itching. Research relies heavily on short-term, randomized controlled trials (RCTs). These studies were applied in research contexts involving fluctuating or unstable symptoms and involved comparison against a placebo or other pharmacologically active agents.

Studies monitored changes in clinical symptom scores, with researchers examining outcomes related to physical discomfort, specifically measuring the severity of scaling, flaking, and patient-reported outcomes describing perceived discomfort (itching). Findings describe patterns observed in the studies regarding measured scaling and flaking scores, particularly when comparing the active shampoo to the placebo group.

Evidence for use in Seborrheic Dermatitis

Clear Shampoo was evaluated in studies focusing on the management of seborrheic dermatitis, a condition that involves periods of heightened symptoms of redness and scaling, usually on the scalp. The research foundation consists mainly of randomized controlled trials (RCTs) that included comparison against a placebo or other active formulations.

Researchers examined outcomes linked to inflammatory or irritative states, such as changes in erythema (redness), scaling severity, and overall assessments of the condition’s severity. The research explored short-term symptom changes in adult populations, where studies monitored responses over defined time intervals, typically four weeks for the main treatment phases.

What is Still Uncertain About Clear Shampoo

Follow-up durations were limited for most pivotal trials, meaning long-term effects are not fully established, and certainty remains low concerning the use for ongoing management. Data for certain groups remain insufficient, with limited information from robust studies regarding the use of Clear Shampoo in the pediatric population (children) and older adults. Furthermore, comparative evidence is lacking for some of the active ingredients used in treatment, and research does not comprehensively assess the effect of the shampoo on a patient's overall quality of life across all available trials.

Key Studies & References

  1. Management of seborrheic dermatitis in adults (NIH StatPearls)
  2. Ketoconazole: MedlinePlus Drug Information (NIH/NLM)

Frequently Asked Questions (FAQ)

Common questions about Clear Shampoo (FAQ)


Q: How often do people usually need to use Clear Shampoo?

Official administration instructions describe different schedules for various conditions. For example, for treatment, the product may be used twice weekly for an initial period. This is often followed by a maintenance phase where use is intermittent, such as once every one to two weeks, as defined in the regulatory labeling.


Q: Can Clear Shampoo be used on colored or chemically treated hair?

Official labeling mentions that using the shampoo may cause effects such as hair discoloration or a change in hair texture. It is also noted that it may remove the curl from permanently waved (permed) hair.


Q: What is the expected timeline for noticeable changes with Clear Shampoo?

For certain conditions, official directions recommend continued use for a period of up to four weeks. Regulatory documents advise that a healthcare professional be consulted if no improvement in symptoms is observed after this time.


Q: How long do the effects of Clear Shampoo typically last after washing?

Following a single application, high amounts of the active ingredient have been observed to remain present on the hair. Official instructions define a maintenance phase for ongoing management, with the shampoo sometimes used as infrequently as once every one to two weeks.


Q: Is there any information about using Clear Shampoo during pregnancy?

Official documents classify the product as Pregnancy Category C. This means its use is permitted only where the potential benefit is determined to outweigh the potential risk, according to regulatory guidelines. Regulatory information confirms that systemic absorption (the amount entering the bloodstream) is minimal after topical use.


Q: Are there any special considerations for older adults using Clear Shampoo?

Studies examined have not demonstrated specific problems in older adults that would typically limit the product's usefulness. However, official information notes that older adults may show increased sensitivity to some side effects.


Q: What is the difference between Clear Shampoo and a regular cosmetic shampoo?

Clear Shampoo is defined as a medicated product because it contains an active, antifungal ingredient, Ketoconazole. Its regulated purpose is the treatment of conditions caused by yeast overgrowth, which differentiates it from a regular, non-medicated cosmetic cleaner.


Q: Does Clear Shampoo help with general hair loss?

Hair loss, or alopecia, has been reported as an adverse reaction during post-marketing surveillance. This effect is classified in official documents as an uncommon or rare event associated with the use of the product.


Q: Is a prescription needed to buy Clear Shampoo?

Regulatory documents indicate that the requirement for a prescription depends on the concentration of the active ingredient. The 1% strength is often classified for Over-the-Counter (OTC) use, while the 2% strength is generally classified as a Prescription Drug (Rx Only).


Q: Can Clear Shampoo cause a feeling of dryness on the scalp?

Official documents list dry skin as a documented adverse reaction in the safety profile. Changes in the oiliness or dryness of the hair and scalp are also noted as possible side effects.


Q: Is Clear Shampoo safe to use if I am already taking a lot of different medications?

Official regulatory information states that the systemic absorption of the active ingredient is minimal after topical application. Regulatory information indicates a minimal risk of systemic drug-drug interactions due to the low absorption, meaning clinically significant systemic drug-drug interactions are not anticipated.


Q: Can Clear Shampoo be used on other parts of the body besides the scalp?

The product is authorized for cutaneous use, meaning it can be used on the skin as well as the scalp. Official indications include the treatment of conditions like pityriasis versicolor, which may affect skin on the torso.


Q: Where can I find the official ingredient list for Clear Shampoo?

The complete list of all ingredients, including the active ingredient and inactive ingredients (excipients), can be found in the official Prescribing Information documents. These are published by regulatory bodies such as the FDA (DailyMed) or within the Summary of Product Characteristics (SmPC) in Europe.


Q: Does Clear Shampoo have a strong smell or fragrance?

Official ingredient lists for certain product formulations sometimes include an added fragrance as an inactive component (excipient). This is a component that contributes to the product's scent.


Q: Why is Clear Shampoo only available in certain countries?

A medicine can only be legally marketed and sold within a country after that territory's regulatory authority, such as the FDA or EMA, has specifically reviewed the safety and efficacy data and granted a marketing authorization for the product.


Q: Is it normal to feel a tingling sensation when using Clear Shampoo?

The regulatory safety profile does not specifically list 'tingling' as a documented side effect. However, the official documents do list related local adverse reactions in the Skin and Subcutaneous Tissue Disorders class, such as skin burning sensation, irritation, and pruritus (itching).


Q: What if I accidentally swallow a little bit of Clear Shampoo?

The product is strictly for external use. Official guidance describes that supportive measures are typically employed in the event of accidental ingestion. Induced vomiting or gastric lavage is typically avoided according to official documents.


Q: Is Clear Shampoo recommended for people with temporary scalp issues?

The authorized indications for use are for the treatment of conditions like seborrheic dermatitis and pityriasis versicolor, which are specifically linked to yeast overgrowth. It is not generally indicated for non-specific, temporary scalp issues.


Q: What does the patient information leaflet say about stopping the use of Clear Shampoo?

Official documents define a required gradual withdrawal period for patients who are transitioning from using potent topical corticosteroids when starting the shampoo. This measured cessation is put in place to help manage potential rebound effects of the original condition.


Q: Is Clear Shampoo gluten-free or suitable for people with specific dietary restrictions?

Official regulatory documents provide a full list of inactive ingredients (excipients). The full list of excipients is provided, which patients may consult to determine compatibility with specific dietary restrictions.


Q: Can Clear Shampoo cause hair breakage or damage?

Documented adverse reactions, according to regulatory sources, include changes in hair texture. Hair loss (alopecia) has also been reported, which may be a related concern for patients worried about hair damage.


Q: Is there a maximum amount of time someone can use Clear Shampoo?

Regulatory labeling defines an initial treatment period (e.g., 2–4 weeks) followed by a maintenance phase for ongoing management. Official documents generally do not specify a maximum time limit for continued intermittent use.


Q: What are the criteria for being eligible to use Clear Shampoo?

Eligibility is determined by factors defined in the regulatory labeling. These include age (authorized for adults and adolescents 12 and older) and the absence of a known hypersensitivity or allergy to the active ingredient or any excipients in the formulation.


Q: Can Clear Shampoo be used as a general preventative measure?

Official indications list the use of the shampoo for the prevention of recurrence of some conditions, such as pityriasis versicolor, following the successful completion of the initial treatment phase.


Q: Is there official information about what to do if the product gets in your eyes?

Official warnings state that the shampoo may be irritating to the eyes and mucous membranes. If contact occurs, the regulatory guidance is to thoroughly bathe or rinse the eyes with water.


Q: Are there different versions or strengths of Clear Shampoo available?

Yes, regulatory documents mention that the product is available in different strengths. Typically, this means the shampoo contains either 1% or 2% of the active ingredient, Ketoconazole.


Q: Can I switch between Clear Shampoo and a generic version easily?

The preparation contains the single active ingredient Ketoconazole. The FDA allows generic products that meet the same quality and performance standards as the original reference drug. Differences between the products are best discussed with a healthcare professional or pharmacist.

How should Clear Shampoo be stored and disposed of?

Official Storage and Disposal Requirements

Ketoconazole medicated shampoo must be stored and disposed of in strict accordance with the instructions provided in its government-approved labeling.

Storage Conditions

The product must be stored at a Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F). The label explicitly requires the shampoo to be protected from light and kept from freezing. For product stability, it must be stored in its original container and kept tightly closed when not in use.

Child-Safety and Disposal

Consistent with official regulatory standards, the container must be stored out of the sight and reach of children. Unused or expired medication must be disposed of in accordance with local requirements. Regulatory information specifies no special requirements for disposal beyond adherence to community-level waste management protocols.

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

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