NCT03033654

Brief 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.

Trial Health

100
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
31

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Feb 2015

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

February 1, 2015

Completed
Same day until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 1, 2015

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 1, 2015

Completed
2 years until next milestone

First Submitted

Initial submission to the registry

January 20, 2017

Completed
7 days until next milestone

First Posted

Study publicly available on registry

January 27, 2017

Completed
Last Updated

January 27, 2017

Status Verified

January 1, 2017

Enrollment Period

Same day

First QC Date

January 20, 2017

Last Update Submit

January 26, 2017

Conditions

Sun Protection

Outcome Measures

Primary Outcomes (1)

  • 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.

Study Arms (1)

Intervention

EXPERIMENTAL

Two Consecutive Sunscreen Applications

Other: Sunscreen, Actinica

Interventions

Sunscreen, ActinicaOTHER

Two Consecutive Sunscreen Applications

Intervention

Eligibility Criteria

Age18 Years+
Sexall(Gender-based eligibility)
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Healthy Caucasians between older than 18

You may not qualify if:

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

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Interventions

Sunscreening Agents

Intervention Hierarchy (Ancestors)

Radiation-Protective AgentsProtective AgentsPhysiological Effects of DrugsPharmacologic ActionsChemical Actions and UsesDermatologic AgentsTherapeutic UsesCosmeticsSpecialty Uses of Chemicals

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
PREVENTION
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
MD

Study Record Dates

First Submitted

January 20, 2017

First Posted

January 27, 2017

Study Start

February 1, 2015

Primary Completion

February 1, 2015

Study Completion

February 1, 2015

Last Updated

January 27, 2017

Record last verified: 2017-01

Data Sharing

IPD Sharing
Will not share