Publication: Sunscreen application to the face persists beyond 2 hours in indoor workers: an open-label trial
Submitted Date
Received Date
Accepted Date
Issued Date
2019-07-04
Copyright Date
Announcement No.
Application No.
Patent No.
Valid Date
Resource Type
Edition
Resource Version
Language
File Type
No. of Pages/File Size
ISBN
ISSN
14711753
09546634
09546634
eISSN
Scopus ID
WOS ID
Pubmed ID
arXiv ID
Call No.
Other identifier(s)
2-s2.0-85057559091
Journal Title
Volume
Issue
item.page.oaire.edition
Start Page
End Page
Access Rights
Access Status
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Physical Location
Bibliographic Citation
Journal of Dermatological Treatment. Vol.30, No.5 (2019), 483-486
Citation
Chutima Rungananchai, Narumol Silpa-archa, Chanisada Wongpraparut, Bordeesuda Suiwongsa, Viboon Sangveraphunsiri, Woraphong Manuskiatti (2019). Sunscreen application to the face persists beyond 2 hours in indoor workers: an open-label trial. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/51538.
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Sunscreen application to the face persists beyond 2 hours in indoor workers: an open-label trial
Alternative Title(s)
Author's Affiliation
Author's E-mail
Editor(s)
Editor's Affiliation
Corresponding Author(s)
Creator(s)
Compiler
Advisor(s)
Illustrator(s)
Applicant(s)
Inventor(s)
Issuer
Assignee
Other Contributor(s)
Series
Has Part
Abstract
© 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group. Background: The American Academy of Dermatology recommends reapplication of sunscreen every two hours for adequate sun protection when outdoor. However, the frequency of reapplication needed to achieve adequate protection in indoor workers remains unknown. Objective: To investigate the persistence of sunscreen applied once in the morning on the face of indoor workers throughout a normal 8-hour workday. Methods: This open-label trial included 20 healthy volunteers who work indoors. Volunteers applied 1 g of sunscreen (2 mg/cm2) mixed with 2% invisible blue fluorescent agent on the face in the morning. Photographs were taken by VISIA-CR booth in UV mode at 8 am and then every 2 hours thereafter until 4 pm with limited outdoor activity less than 1 hour. Six areas of the face were analyzed using digital image analysis software. The primary outcome was the total amount of sunscreen diminution during the 8-hour study period. Results: The amount of sunscreen decreased with mean peak reduction of 16.3% at 2 hours, and minimal reduction thereafter. Total sunscreen reduction was 28.2% at the end of the 8-hour day. Limitations: Small study population. Conclusion: For indoor workers who applied adequate amount of sunscreen once in the morning, reapplication of sunscreen may be unnecessary.