Anti-aging light therapy, through photobiomodulation (PBM) or low-level light therapy (LLLT), uses non-thermal LED light (600–1300 nm) to stimulate cell repair and rejuvenation without damaging the skin. Unlike invasive laser or IPL treatments, PBM directly enhances skin regeneration by increasing fibroblast and keratinocyte activity, improving collagen production, and reducing inflammation—all with minimal downtime or side effects. While traditional lasers and LEDs rely on narrow wavelengths, emerging evidence suggests that polychromatic light may offer superior anti-aging benefits by targeting multiple regenerative pathways. This clinical study explores the efficacy of PBM as a safe, non-invasive anti-aging light therapy using optimized spectral parameters for skin revitalization.

The study aimed to assess the safety and efficacy of two novel light sources for whole-body applications in polychromatic, non-thermal photobiomodulation (PBM) as a potential breakthrough in anti-aging light therapy for improving skin appearance and feel. While existing laser and LED sources are effective for non-thermal photorejuvenation, they have limitations such as spot-shaped emissions and narrow spectral ranges. This study explored whether a broader polychromatic spectrum could enhance the outcomes of anti-aging light therapy, focusing on skin rejuvenation. A total of 136 participants were enrolled in a randomized trial comparing the effects of two different polychromatic light wavelengths with a control group over 30 treatment sessions.