November 2024 in “Health Science Reports” Light/laser therapy can effectively increase hair density in some types of alopecia, especially androgenic alopecia and alopecia areata.
January 2023 in “Skin appendage disorders” Laser treatment for hair loss works equally well on different skin types, but more research is needed for very dark skin.
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December 2017 in “Journal of Cosmetic and Laser Therapy” Low-level laser therapy can stimulate hair growth more effectively than fake devices, but patient satisfaction is similar for both. Results should be taken with caution due to small study sizes and differences between studies. More research is needed.