British Journal of Dermatology
British Journal of Dermatology
5 years ago

A comprehensive approach to evaluating and classifying sun-protective clothing

S.L. Harrison, N.J. Downs
Background National standards for clothing designed to protect the wearer from the harmful effects of solar ultraviolet radiation (UVR) have been implemented in Australia/New Zealand, Europe, and the USA. Industry standards reflect the need to protect the skin by covering a considerable proportion of the potentially exposed body surface area (BSA) and by reducing UVR-transmission through fabric (the Ultraviolet Protection Factor; UPF). Objectives This research aimed to develop a new index for rating sun-protective clothing that incorporates the BSA coverage of the garment in addition to the UPF of the fabric. Methods A mannequin model was fixed to an optical bench and marked with horizontal lines at 1 cm intervals. An algorithm (the Garment Protector Factor; GPF) was developed based on the number of lines visible on the clothed versus unclothed mannequin and the UPF of the garment textile. This data was collected in 2015-16 and analysed in 2016. Results The GPF weights fabric UPF by BSA coverage above the minimum required by international sun-protective clothing standards for upper-body, lower-body and full-body garments. GPF increases with BSA coverage of the garment and fabric UPF. Three nominal categories are proposed for the GPF: 0 ≤ GPF < 3 for garments that ‘meet’ minimum standards; 3 ≤ GPF < 6 for garments providing ‘good’ sun-protection; and GPF ≥ 6 indicating ‘excellent’ protection. Conclusions Adoption of the proposed rating scheme should encourage manufacturers to design sun-protective garments that exceed the minimum standard for BSA coverage, with positive implications for skin cancer prevention, consumer education and sun-protection awareness. This article is protected by copyright. All rights reserved.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1111/bjd.15938

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