Blue Light in Dermatology

The document "Blue Light in Dermatology" explores the dual nature of blue light (400–500 nm) in dermatological applications, noting its anti-inflammatory and antiproliferative benefits for conditions like acne, psoriasis, atopic dermatitis, and eczema, as well as its potential to promote hair growth by extending the anagen phase of hair follicles. Blue light therapy has shown effectiveness in clinical studies, improving disease severity and quality of life, and demonstrating anticancer properties by inhibiting melanoma cell growth. However, it also poses risks such as oxidative stress, circadian rhythm disruption, and hyperpigmentation. The paper underscores the need for further research to clarify the mechanisms, establish safe treatment protocols, and assess long-term safety.