Efficacy of Low-Level Laser Therapy in Androgenetic Alopecia - A Randomized Controlled Trial

Androgenetic alopecia (AGA) is caused by the susceptibility of hair follicles to androgenic miniaturization, which leads to hair loss. The most common modalities for the treatment of AGA include the use of topical minoxidil and oral finasteride. Low-level laser therapy (LLLT) is a newer modality of treatment for AGA. We tried to evaluate the added benefit of LLLT in AGA compared with topical minoxidil 5% alone.

The aim of this study was to compare the efficacy of LLLT combined with topical 5% minoxidil in AGA versus topical 5% minoxidil used alone.

After ethics committee approval, 54 patients of AGA were randomly divided into two groups. Group A participants received LLLT therapy twice a week plus topical 5% minoxidil and Group B participants received only minoxidil 5% solution. Both the groups were followed up for 16 weeks and evaluated with gross photographs, TrichoScan analysis, and dermoscopy to look for any improvement in hair density.

After 16 weeks, improvement in hair density of 14.78% ± 10.93% in Group A was recorded compared to 11.43% ± 6.43% in Group B. However, while comparing both means, P value was 0.45 which was not significant. The physician global assessment and patient satisfaction score revealed no significant difference between both the groups.

Although LLLT appears to be safe and effective in the treatment of male pattern hair loss, we did not observe any significant difference in terms of improvement in hair density between both the groups.