Acne — Blue Light RCT

Category: Skin & Dermatology

Journal: British Journal of Dermatology (2000)

Key finding

Blue light at 415 nm achieved 64% reduction in inflammatory acne lesions after 8 sessions; safe with no phototoxicity.

Protocol

• Wavelength: 415 nm
• Irradiance: 40 mW/cm²
• Dose: 30 J/cm²
• Duration: 2×/week × 4 weeks

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