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

Sunscreen Persistence Clinical Trial

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?

Status Recruiting

Clinical Trial Summary

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.

Clinical Trial Description

n/a

Study Design

Allocation: Randomized, Intervention Model: Factorial Assignment, Masking: Open Label, Primary Purpose: Prevention

Related Conditions & MeSH terms

• Sunscreen Persistence
• Vitamin D Production in the Skin

• NCT number: NCT00711256
• Study type: Interventional
• Source: Bispebjerg Hospital
• Contact: Hans Christian Wulf, Dr.med
• Phone: +45 3135 3155
• Status: Recruiting
• Phase: N/A
• Start date: July 2008
• Completion date: November 2008