Cited by 56Skin Protection and Agingmelanin and skin pigmentationNonmelanoma Skin Cancer Studies

Photoprotection: Current developments and controversies

Open access
Pellacani, Giovanni, Lim, Henry W., Stockfleth, Eggert, Sibaud, Vincent, Brugués, Ariadna Ortiz, Saint Aroman, Markéta·2024·Journal of the European Academy of Dermatology and Venereology

Abstract

This review aimed at summarizing some of the key points that were discussed during the photoprotection session at the International Forum of Dermatology in 2022. This international conference was designed to address prominent topics of clinical dermatology in a holistic way, allowing to articulate multiple viewpoints. Therefore, this review does not claim to be exhaustive, but is instead intended to give an overview of recent developments and ongoing controversies in the field of photoprotection. Cumulative ultraviolet radiation (UVR) exposure is the major aetiological factor in the development of photoageing, photoimunosuppression and photocarcinogenesis. UVA (320–400 nm) penetrates into the dermis and damages DNA and other intracellular and acellular targets primarily by generating reactive oxygen species (ROS). It is the major contributor to photoageing, characterized by fine and coarse wrinkles, dyspigmentation and loss of elasticity. UVB (290–320 nm) is responsible for sunburns through direct damage to DNA by the formation of 6–4 cyclobutane pyrimidine dimers (CPDs) and pyrimidine 6–4 pyrimidone photoproducts. Both UVA and UVB exposure increase the risk of basal cell carcinoma, squamous cell carcinoma and melanoma. In recent years, visible light (VL; 400–700 nm) has also been implicated in the exacerbation of conditions aggravated by sun exposure such as hyperpigmentation and melasma. Photoprotection is a critical health strategy to reduce the deleterious effects of UVR and VL. Comprehensive photoprotection strategies include staying in the shade when outdoors, wearing photoprotective clothing including a wide‐brimmed hat, and sunglasses, and the use of sunscreen. Due to the absorption of UV filters, the safety of sunscreens has been questioned. Newer sunscreens are becoming available with filters with absorption even beyond the UV spectrum, offering enhanced protection compared with older products. Prevention of photocarcinogenesis, sun‐induced or sunlight‐exacerbated hyperpigmentary conditions and drug‐induced photosensitivity is an important reason for adopting comprehensive photoprotection strategies.

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Crossref · 10.1111/jdv.19677

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  1. 2022, Commission Regulation (EU) 2022/2195 of 10 November 2022 amending regulation (EC) No 1223/2009 of the European Parliament and of the council as regards the use of butylated hydroxytoluene, acid yellow 3, homosalate and HAA299 in cosmetic products and correcting that regulation as regards the use of resorcinol in cosmetic products, Official Journal of the European Union, 32

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Authors
Pellacani, G., Lim, H. W., Stockfleth, E., Sibaud, V., Brugués, A. O., & Saint Aroman, M.
Affiliations
  • Sapienza University of Rome (IT)
  • Henry Ford Health (US)
  • St. Josef-Hospital (DE)
  • Institut universitaire du cancer de Toulouse Oncopole (FR)
  • Department of Oncodermatology Claudius Regaud Institute and University Cancer Institute Toulouse Oncopole Toulouse France
  • Medical Direction Dermo‐Cosmétique & Personal Care Pierre Fabre Group Toulouse France
Venue
Journal of the European Academy of Dermatology and Venereology
Publisher
Wiley
Published
2024-06-26
Volume
38
Issue
S5
Pages
12-20
ISSN
  • 0926-9959 (ISSN-L)
  • 1468-3083
OpenAlex
W4400060043
Cited by
56
References
79
Citations by year
2026: 32 · 2025: 23 · 2024: 1
FWCI
4.40
Type
journal article
Language
en
Open access
Locations
  • Journal of the European Academy of Dermatology and Venereology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Dermatology › Skin Protection and Aging
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › melanin and skin pigmentation
  • Health Sciences › Medicine › Epidemiology › Nonmelanoma Skin Cancer Studies
Keywords
photoprotection, ultraviolet radiation, UVA, UV-B radiation, photoaging, photocarcinogenesis, photoimmunosuppression, reactive oxygen species, cyclobutane pyrimidine dimers, sunscreen safety, UV filters, visible light, melasma, hyperpigmentation, drug-induced photosensitivity
MeSH terms
Humans, Skin Neoplasms, Sunburn, Sunscreening Agents, Ultraviolet Rays, Skin Aging

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