Cited by 75Photodynamic Therapy Research StudiesDermatology and Skin DiseasesDermatologic Treatments and Research

Blue Light in Dermatology

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Sadowska, Magdalena, Narbutt, Joanna, Lesiak, Aleksandra·2021·Life

Abstract

Phototherapy is an important method of dermatological treatments. Ultraviolet (280–400 nm) therapy is of great importance; however, there are concerns of its long-term use, as it can lead to skin aging and carcinogenesis. This review aims to evaluate the role and the mechanism of action of blue light (400–500 nm), a UV-free method. The main mediators of cellular responses to blue light are nitric oxide (NO) and reactive oxygen species (ROS). However, the detailed mechanism is still not fully understood. It was demonstrated that blue light induces an anti-inflammatory and antiproliferative effect; thus, it may be beneficial for hyperproliferative and chronic inflammatory skin diseases such as atopic dermatitis, eczema, and psoriasis. It was also found that blue light might cause the reduction of itching. It may be beneficial on hair growth and may be used in the treatment of acne vulgaris by reducing follicular colonization of Propionibacterium acnes. Further studies are needed to develop accurate protocols, as the clinical effects depend on the light parameters as well as the treatment length. There are no major adverse effects observed yet, but long-term safety should be monitored as there are no studies considering the long-term effects of blue light on the skin.

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Authors
Sadowska, M., Narbutt, J., & Lesiak, A.
Affiliations
Medical University of Lodz (PL)
Corresponding author
Sadowska, Magdalena
Venue
Life
Publisher
MDPI AG
Published
2021-07-08
Volume
11
Issue
7
Pages
670
ISSN
2075-1729 (ISSN-L)
OpenAlex
W3183085338
Cited by
74
References
75
Citations by year
2026: 15 · 2025: 12 · 2024: 25 · 2023: 15 · 2022: 7
FWCI
1.89
Type
journal article
Language
en
Open access
Locations
  • Life (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Uniwersytet Łódzki
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Photodynamic Therapy Research Studies
  • Health Sciences › Medicine › Dermatology › Dermatology and Skin Diseases
  • Health Sciences › Medicine › Dermatology › Dermatologic Treatments and Research
Keywords
blue light therapy, nitric oxide, reactive oxygen species, anti-inflammatory activity, antiproliferative activity, atopic dermatitis, psoriasis, hair growth, acne, Propionibacterium acnes, chronic inflammatory skin disease, long-term safety

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