Sunscreen Removal by Clothing Meassured in Vivo. Sun Protection Factor Persistence During a Day Indoor Without Physical Activity. Does Sunscreen Reduce Vitamin D?
试验速览
- 阶段
- 不适用
- 入组人数
- 80
- 试验地点
- 1
- 主要终点
- vitamin D (nmol) meassured in a blood sample.
研究概览
简要总结
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Factorial
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Healthy participants.
- •> 18 years.
- •Skin type I, II, and III.
排除标准
- •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.
研究组 & 干预措施
4
Sunscreen applied 2mg/cm2
干预措施: sunscreen MATAS sunlotion SPF 8 (Other)
4
Sunscreen applied 2mg/cm2
干预措施: UVB light (Radiation)
1
No sunscreen applied
干预措施: UVB light (Radiation)
2
Sunscreen applied 0.5 mg/cm2
干预措施: UVB light (Radiation)
3
Sunscreen applied 1mg/cm2
干预措施: UVB light (Radiation)
结局指标
主要结局
vitamin D (nmol) meassured in a blood sample.
时间窗: 5 days after sunscreen use and UV light exposure
次要结局
未报告次要终点