NCT00711256

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

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

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 80 (estimated)
• Sponsor: Bispebjerg Hospital · Academic / Other
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Accepted

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.

Conditions

• Vitamin D Production in the Skin
• Sunscreen Persistence

Interventions

Type	Name	Description
OTHER	sunscreen MATAS sunlotion SPF 8
RADIATION	UVB light	duration 4 times 1 minute radiation on the trunk.

Timeline

• Start date: 2008-07-01
• Primary completion: 2008-08-01
• Completion: 2008-11-01
• First posted: 2008-07-08
• Last updated: 2008-07-08

Locations

1 site across 1 country: Denmark