Facial exposure to ultraviolet radiation: predicted sun protection effectiveness of various hat styles

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Ressource 1Download: 2018_Backes_Facial_Photodermatology_Photoimmunology_Photomedicine_postprint.pdf (1260.84 [Ko])
State: Public
Version: Author's accepted manuscript
Serval ID
serval:BIB_0FC7B33B30A3
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Facial exposure to ultraviolet radiation: predicted sun protection effectiveness of various hat styles
Journal
Photodermatology, Photoimmunology & Photomedicine
Author(s)
Backes Claudine, Religi Arianna, Moccozet Laurent, Vuilleumier Laurent, Vernez David, Bulliard Jean-Luc
ISSN
1600-0781 (Electronic)
ISSN-L
0905-4383
Publication state
Published
Issued date
09/2018
Peer-reviewed
Oui
Volume
34
Number
5
Pages
330-337
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Solar ultraviolet radiation (UVR) doses received by individuals are highly influenced by behavioural and environmental factors. This study aimed at quantifying hats' sun protection effectiveness in various exposure conditions, by predicting UVR exposure doses and their anatomical distributions.
A well-defined 3-dimensional head morphology and 4 hat styles (a cap, a helmet, a middle- and a wide-brimmed hat) were added to a previously published model. Midday (12:00-14:00) and daily (08:00-17:00) seasonal UVR doses were estimated at various facial skin zones, with and without hat wear, accounting for each UVR component. Protection effectiveness was calculated by the relative reduction in predicted UVR dose, expressed as a predictive protection factor (PPF).
The unprotected entire face received 2.5 times higher UVR doses during a summer midday compared to a winter midday (3.3 vs 1.3 standard erythema dose [SED]) with highest doses received at the nose (6.1 SED). During a cloudless summer day, the lowest mean UVR dose is received by the entire face protected by a wide-brimmed hat (1.7 SED). No hat reached 100% protection at any facial skin zone (PPF <sub>max</sub> : 76%). Hats' sun protection effectiveness varied highly with environmental conditions and was mainly limited by the high contribution of diffuse UVR, irrespective of hat style. Larger brim sizes afforded greater facial protection than smaller brim sizes except around midday when the sun position is high.
Consideration of diffuse and reflected UVR in sun educational messages could improve sun protection effectiveness.
Keywords
Clothing, Face, Humans, Seasons, Skin, Skin Neoplasms/prevention & control, Sunlight/adverse effects, Ultraviolet Rays/adverse effects, prevention, protection effectiveness, skin cancer, sun exposure, ultraviolet radiation (uv)
Pubmed
Web of science
Create date
26/04/2018 17:27
Last modification date
20/08/2019 12:36
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