LLLT: Does It Work?
Although multiple low-level laser therapy (LLLT) devices have received FDA clearance for safety, LLLT effect on hair loss diseases is still a matter of debate for male and female pattern hair loss (MPHL, FPHL). Completed clinical trials of LLLT use for MPHL and/or FPHL demonstrated improvement precisely measured hair parameters such as density and width. However, improvement in hair appearance was insufficiently demonstrated. Moreover, no study compared LLLT and conventional drugs such as topical minoxidil, oral finasteride, and dutasteride. Therefore, at present, LLLT should be considered as an adjunctive therapy to these treatments. Further, if patients dislike currently available medical treatments, LLLT may be offered as an alternative method. Additionally, our basic research revealed that HGF, leptin, and VEGF-A secreted from dermal papilla cells mediate the red light effect on hair growth.
KeywordMale pattern hair loss Female pattern hair loss LLLT LED
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