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Food dye skin test pulled before it even started

NCT ID NCT06800183

Knowledge-focused Sponsor: Johns Hopkins University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled This study
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study aimed to see if tartrazine, a common food dye, could make skin temporarily transparent in healthy adults. Researchers planned to apply different doses to the back, stomach, and forearm and take photos every 5 minutes. However, the study was withdrawn before any participants were enrolled, so no results are available.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Early phase 1

The earliest testing in people: a first look at safety, in a very small group.

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Healthy adults aged 18 and older * Willingness to comply with study procedures * Able to provide informed consent Exclusion Criteria: * Known allergies to tartrazine or related compounds * Current or history of skin conditions such as eczema, psoriasis, or severe inflammatory diseases, defined as scoring ≥16 on the Eczema Area and Severity Index (EASI) or ≥10 on the Psoriasis Area Severity Index (PASI) * Other atopic conditions such as asthma, allergic rhinitis, or hypersensitivity reactions * Pregnancy or breastfeeding * Use of immunosuppressive medications * Any condition that may interfere with the safety or results of the study

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Dermoscopy Healthy Optical imaging

Contacts and locations

Locations

  • Johns Hopkins Hospital

    Baltimore, Maryland, 21287, United States

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