Sunscreen: Persistence of Sun Protection Factor and the Influence on Vitamin D (sunscreen)

July 7, 2008 updated by: Bispebjerg Hospital

Sunscreen Removal by Clothing Meassured in Vivo. Sun Protection Factor Persistence During a Day Indoor Without Physical Activity. Does Sunscreen Reduce Vitamin D?

The investigators want to investigate whether sunscreen is removed by clothing and to what extend when the amount of sunscreen applied varies.Does clothing reduce the SPF when clothes are put on 20, 8, or 4 minutes after sunscreen application? The investigators also want to investigate the persistence of sunscreen during eight hours indoor. How much does the SPF reduces? Furthermore, we want to investigate whether sunscreen in the layers 2, 1, and 0.5 mg/cm2 reduce the vitamin D production in the skin.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

80

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 Contact

  • Name: Hans Christian Wulf, Dr.med
  • Phone Number: +45 3135 3155

Study Contact Backup

Study Locations

  • Denmark
    • Kbh Nv
      • Copenhagen, Kbh Nv, Denmark, 2400
        • Recruiting
        • Bispebjerg Hospital
        • Contact:
        • Contact:
          • HC Wulf, Dr.med
          • Phone Number: +45 3531 3155
        • Principal Investigator:
          • Ditte Beyer, stud.med

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 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Healthy participants.
  • > 18 years.
  • Skin type I, II, and III.

Exclusion Criteria:

  • Pregnancy.
  • Medicin use.
  • Skin or other diseases.
  • The participants must not have been in solarium or gotten sun on their trunks in the 3 months before the study start and during the study.
  • Skin types IV and above.

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: Prevention
  • Allocation: Randomized
  • Interventional Model: Factorial Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: 1
No sunscreen applied
Radiation: UVB light
duration 4 times 1 minute radiation on the trunk.
Active Comparator: 2
Sunscreen applied 0.5 mg/cm2
Radiation: UVB light
duration 4 times 1 minute radiation on the trunk.
Active Comparator: 3
Sunscreen applied 1mg/cm2
Radiation: UVB light
duration 4 times 1 minute radiation on the trunk.
Active Comparator: 4
Sunscreen applied 2mg/cm2
Radiation: UVB light
duration 4 times 1 minute radiation on the trunk.
Other: sunscreen MATAS sunlotion SPF 8
Other Names:
  • MATAS sollotion. Matas Denmark, 3400 Alleroed

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
vitamin D (nmol) meassured in a blood sample.
Time Frame: 5 days after sunscreen use and UV light exposure
5 days after sunscreen use and UV light exposure

Collaborators and Investigators

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

Sponsor

Bispebjerg Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

July 1, 2008

Primary Completion (Anticipated)

August 1, 2008

Study Completion (Anticipated)

November 1, 2008

Study Registration Dates

First Submitted

July 7, 2008

First Submitted That Met QC Criteria

July 7, 2008

First Posted (Estimate)

July 8, 2008

Study Record Updates

Last Update Posted (Estimate)

July 8, 2008

Last Update Submitted That Met QC Criteria

July 7, 2008

Last Verified

April 1, 2008

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • H-B-2007-120

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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