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This study found that combining red light therapy with oral beta-carotene significantly improved photoaging treatment outcomes compared to red light therapy alone, with Group A showing a 56.12% reduction in photoaging scores over 12 weeks versus 44.78% in Group B.

This study found that red OLED irradiation can significantly promote hair regrowth in mice, increasing hair length by 1.5 times and hair regrowth area by over 3 times after 20 days of treatment.

This study reported that high-intensity red LED irradiation increased osteogenic differentiation and mineralization of human bone marrow mesenchymal stem cells, potentially through Wnt/β-catenin pathway activation.

In this study, LED irradiation was found to promote hORSC proliferation and stimulate the Wnt5a/β-catenin and ERK signaling pathways, suggesting a potential mechanism for hair growth.

In this review, the researchers highlight LED therapy as an emerging and safe treatment for skin inflammatory conditions, aging, and hair growth disorders, noting its integration into dermatological practice but emphasizing the need for more controlled studies to confirm its efficacy.