Two Consecutive Sunscreen Applications Optimize Sun Protection

Sun Protection Clinical Trial

Official title:

Two Consecutive Sunscreen Applications Optimize Sun Protection

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03033654
• Other study ID #: H-1-2014-094
• Status: Completed
• Phase: N/A
• First received: January 20, 2017
• Last updated: January 26, 2017
• Start date: February 2015
• Est. completion date: February 2015

Study information

• Verified date: January 2017
• Source: Bispebjerg Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The investigators aim to investigate how much two consecutive applications of sunscreen before sun exposure can increase the quantities of sunscreen applied and decrease the skin area left without sunscreen compared to a single application. Volunteers wearing swimwear applied sunscreen in a laboratory environment twice and had pictures taken in black light before and after. As sunscreens absorb black light the darkness of the skin increased with increasing amounts of sunscreen applied. The investigators conducted a standard curve establishing a link between picture darkness and applied sunscreen quantity. Participants were asked to apply sunscreen the way they would normally do but two consecutive times. No other advice was given. The level of protection was determined by picture analysis as measurements of darkness of selected skin sites as well as the percentages of skin area left without sunscreen in different body regions and in total.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 31
• Est. completion date: February 2015
• Est. primary completion date: February 2015
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Healthy Caucasians between older than 18

Exclusion Criteria:

• Suffering from a skin disease, were allergic to the content in sunscreen, were pregnant or breastfeeding

Related Conditions & MeSH terms

• Sun Protection

Intervention

Other:
• Sunscreen, Actinica
Two Consecutive Sunscreen Applications

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Bispebjerg Hospital

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Sun protection	Sun protection will be determined as sunscreen quantities applied in mg/cm^2 and areas of covered skin in percentage.	The day of intervention. Sun protection will be assessed right after sunscreen application.