The Effect of Violet Device Dosed Ultra Violet-C Light (UV-C) Exposure on Healthy Hand Skin

May 2, 2026 updated by: Gary Fisher, University of Michigan

The Effect of Violet Device Dosed UV-C Exposure on Healthy Hand Skin

The purpose of this trial is to determine the safety of ultraviolet light (UV-C) irradiation as a method to sanitize hands instead of chemical-based sanitizers.

Eligible participants will be enrolled and receive treatment with the Violet UV-C device or UV-B. Punch biopsies will be performed following UV exposure to quantify any changes in cellular and molecular properties of the tissue.

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

23

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Michigan
      • Ann Arbor, Michigan, United States, 48109
        • University of Michigan

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 55 years (Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria

  • Good general health
  • Type 1 or type 2 skin (lightly colored skin)
  • No history of skin disorders, disease states or physical conditions which would impair evaluation of the test sites
  • Willingness and ability to follow the protocol
  • No use of lotion or hand sanitizer 3 hours before the experiment

Exclusion Criteria:

  • Has received an experimental drug or used an experimental device in the 30 days prior to admission to the study
  • Undergoing treatment or taking medication that increases sun sensitivity
  • History of keloids
  • History of sensitivity to lidocaine or epinephrine
  • Pregnant or nursing women, pregnancy status will be self-reported, women unsure of their pregnancy status will be excluded

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Ultraviolet lights (UV-B)
Device: Ultraviolet Light (UV-B)
This control group will receive a UV-B exposure as a positive control. Participants will have punch biopsies after exposure.
Experimental: Ultraviolet lights (UV-C) - 1 use
Device: Ultraviolet lights (UV-C) - 1 cycle
Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 1 cycle of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.
Other Names:
  • Violet UV-C Light
  • Care222
Experimental: Ultraviolet lights (UV-C) - 10 uses
Device: Ultraviolet lights (UV-C) - 10 cycles
Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 10 cycles of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.
Experimental: Ultraviolet lights (UV-C) - 15 uses
Device: Ultraviolet lights (UV-C) - 15 cycles
Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 15 cycles of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.
Experimental: Ultraviolet lights (UV-C) - 25 uses
Device: Ultraviolet lights (UV-C) - 25 cycles
Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 25 cycles of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Deoxyribonucleic Acid (DNA) Damage in the Form of DNA Base Pair Dimers Measured by Immunohistochemistry Microscopy With Statistical Analysis.
Time Frame: Day 1 (visit 1 after light therapy)
Day 1 (visit 1 after light therapy)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Michigan

Collaborators

Archimedes Innovations, Pbc

Investigators

  • Principal Investigator: Gary Fisher, PhD, University of Michigan

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

April 19, 2022

Primary Completion (Actual)

September 12, 2022

Study Completion (Actual)

September 12, 2022

Study Registration Dates

First Submitted

March 28, 2022

First Submitted That Met QC Criteria

March 28, 2022

First Posted (Actual)

April 6, 2022

Study Record Updates

Last Update Posted (Actual)

May 28, 2026

Last Update Submitted That Met QC Criteria

May 2, 2026

Last Verified

July 1, 2025

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • HUM00198624

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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