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Application of SPF moisturisers is inferior to sunscreens in coverage of facial and eyelid regions

Many moisturisers contain sun protection factors (SPF) equivalent to those found in sunscreens. However, there is a lack of research into how SPF moisturiser application compares to sunscreens in terms of coverage achieved and protection afforded. Previously we demonstrated that users incompletely c...

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Autores principales: Lourenco, Elizabeth A. J., Shaw, Liam, Pratt, Harry, Duffy, Georgia L., Czanner, Gabriela, Zheng, Yalin, Hamill, Kevin J., McCormick, Austin G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6447356/
https://www.ncbi.nlm.nih.gov/pubmed/30943192
http://dx.doi.org/10.1371/journal.pone.0212548
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author Lourenco, Elizabeth A. J.
Shaw, Liam
Pratt, Harry
Duffy, Georgia L.
Czanner, Gabriela
Zheng, Yalin
Hamill, Kevin J.
McCormick, Austin G.
author_facet Lourenco, Elizabeth A. J.
Shaw, Liam
Pratt, Harry
Duffy, Georgia L.
Czanner, Gabriela
Zheng, Yalin
Hamill, Kevin J.
McCormick, Austin G.
author_sort Lourenco, Elizabeth A. J.
collection PubMed
description Many moisturisers contain sun protection factors (SPF) equivalent to those found in sunscreens. However, there is a lack of research into how SPF moisturiser application compares to sunscreens in terms of coverage achieved and protection afforded. Previously we demonstrated that users incompletely covered their eyelid regions during routine sunscreen application. Here, we aimed to determine if SPF moisturiser users also displayed these tendencies. A study population of 84 participants (22 males, 62 females, age 18–57) were exposed to UV radiation and photographed using a tripod mounted UV sensitive DSLR camera on two separate visits. At visit one, images were acquired before and after applying either SPF30 sunscreen or moisturiser, then at visit two the study was repeated with the other formulation. Images were processed for facial landmark identification followed by segmentation mapping of hue saturation values to identify areas of the face that were/were not covered. Analyses revealed that application of moisturiser was significantly worse than sunscreen in terms area of the whole face missed (11.1% missed with sunscreen compared to 16.6% for SPF moisturiser p<0.001 paired t-test). This difference was primarily due to decreased coverage of the eyelid regions (14.0% missed with sunscreen, 20.9% moisturiser, p<0.001). Analysis of a post-study questionnaire revealed participants to be unaware of their incomplete coverage. Secondary analyses revealed improved coverage in males (p = 0.05), and, with moisturiser only, in participants with darker skin tones (p = 0.02). Together these data indicate that, despite potential advantages in terms of increased frequency of application of moisturiser, the areas of the face that are at higher cancer risk are likely not being protected, and that participants are unaware that they are at risk. As such, alternative sun-protection strategies should be promoted.
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spelling pubmed-64473562019-04-17 Application of SPF moisturisers is inferior to sunscreens in coverage of facial and eyelid regions Lourenco, Elizabeth A. J. Shaw, Liam Pratt, Harry Duffy, Georgia L. Czanner, Gabriela Zheng, Yalin Hamill, Kevin J. McCormick, Austin G. PLoS One Research Article Many moisturisers contain sun protection factors (SPF) equivalent to those found in sunscreens. However, there is a lack of research into how SPF moisturiser application compares to sunscreens in terms of coverage achieved and protection afforded. Previously we demonstrated that users incompletely covered their eyelid regions during routine sunscreen application. Here, we aimed to determine if SPF moisturiser users also displayed these tendencies. A study population of 84 participants (22 males, 62 females, age 18–57) were exposed to UV radiation and photographed using a tripod mounted UV sensitive DSLR camera on two separate visits. At visit one, images were acquired before and after applying either SPF30 sunscreen or moisturiser, then at visit two the study was repeated with the other formulation. Images were processed for facial landmark identification followed by segmentation mapping of hue saturation values to identify areas of the face that were/were not covered. Analyses revealed that application of moisturiser was significantly worse than sunscreen in terms area of the whole face missed (11.1% missed with sunscreen compared to 16.6% for SPF moisturiser p<0.001 paired t-test). This difference was primarily due to decreased coverage of the eyelid regions (14.0% missed with sunscreen, 20.9% moisturiser, p<0.001). Analysis of a post-study questionnaire revealed participants to be unaware of their incomplete coverage. Secondary analyses revealed improved coverage in males (p = 0.05), and, with moisturiser only, in participants with darker skin tones (p = 0.02). Together these data indicate that, despite potential advantages in terms of increased frequency of application of moisturiser, the areas of the face that are at higher cancer risk are likely not being protected, and that participants are unaware that they are at risk. As such, alternative sun-protection strategies should be promoted. Public Library of Science 2019-04-03 /pmc/articles/PMC6447356/ /pubmed/30943192 http://dx.doi.org/10.1371/journal.pone.0212548 Text en © 2019 Lourenco et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Lourenco, Elizabeth A. J.
Shaw, Liam
Pratt, Harry
Duffy, Georgia L.
Czanner, Gabriela
Zheng, Yalin
Hamill, Kevin J.
McCormick, Austin G.
Application of SPF moisturisers is inferior to sunscreens in coverage of facial and eyelid regions
title Application of SPF moisturisers is inferior to sunscreens in coverage of facial and eyelid regions
title_full Application of SPF moisturisers is inferior to sunscreens in coverage of facial and eyelid regions
title_fullStr Application of SPF moisturisers is inferior to sunscreens in coverage of facial and eyelid regions
title_full_unstemmed Application of SPF moisturisers is inferior to sunscreens in coverage of facial and eyelid regions
title_short Application of SPF moisturisers is inferior to sunscreens in coverage of facial and eyelid regions
title_sort application of spf moisturisers is inferior to sunscreens in coverage of facial and eyelid regions
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6447356/
https://www.ncbi.nlm.nih.gov/pubmed/30943192
http://dx.doi.org/10.1371/journal.pone.0212548
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