We are updating the design of this site. Learn more.
Show more
ClinicalTrials.gov
ClinicalTrials.gov Menu

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

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified April 2008 by Bispebjerg Hospital.
Recruitment status was:  Recruiting
Sponsor:
ClinicalTrials.gov Identifier:
NCT00711256
First Posted: July 8, 2008
Last Update Posted: July 8, 2008
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
Bispebjerg Hospital
  Purpose
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.

Condition Intervention
Vitamin D Production in the Skin Sunscreen Persistence Other: sunscreen MATAS sunlotion SPF 8 Radiation: UVB light

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Sunscreen Removal by Clothing Meassured in Vivo. Sun Protection Factor Persistence During a Day Indoor Without Physical Activity. Does Sunscreen Reduce Vitamin D?

Resource links provided by NLM:


Further study details as provided by Bispebjerg Hospital:

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

Estimated Enrollment: 80
Study Start Date: July 2008
Estimated Study Completion Date: November 2008
Estimated Primary Completion Date: August 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
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
Other: sunscreen MATAS sunlotion SPF 8
Other Name: MATAS sollotion. Matas Denmark, 3400 Alleroed
Radiation: UVB light
duration 4 times 1 minute radiation on the trunk.

  Eligibility

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

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.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00711256


Contacts
Contact: Hans Christian Wulf, Dr.med +45 3135 3155
Contact: Ditte Beyer, stud.med +45 2014 1423 beyer10@tiscali.dk

Locations
Denmark
Bispebjerg Hospital Recruiting
Copenhagen, Kbh Nv, Denmark, 2400
Contact: HC Wulf, Dr.med    +45 3531 3155      
Contact: Ditte Beyer, stud.med    +45 2014 1423    beyer10@tiscali.dk   
Principal Investigator: Ditte Beyer, stud.med         
Sponsors and Collaborators
Bispebjerg Hospital
  More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Bispebjerg Hospital. Dr. Hans Christian Wulf, Bispebjerg Hospital
ClinicalTrials.gov Identifier: NCT00711256     History of Changes
Other Study ID Numbers: H-B-2007-120
First Submitted: July 7, 2008
First Posted: July 8, 2008
Last Update Posted: July 8, 2008
Last Verified: April 2008

Keywords provided by Bispebjerg Hospital:
Sunscreen
Application
Vitamin D
Sun protection factor
Clothing

Additional relevant MeSH terms:
Vitamins
Vitamin D
Ergocalciferols
Sunscreening Agents
Micronutrients
Growth Substances
Physiological Effects of Drugs
Bone Density Conservation Agents
Radiation-Protective Agents
Protective Agents
Dermatologic Agents