The Use of Light-Based Therapies in the Treatment of Alopecia

August 2025 in “ Journal of Cosmetic Dermatology ”

Robert J. Vanaria, Aysham Chaudry, Mark S. Nestor

From the encyclopedia

Low Level Laser Therapy →

laser therapy for anti-inflammatory and likely insignificant hair regrowth effects

Minoxidil →

An essential vasodilator with some anti-androgenic effects

Finasteride →

Frontline, gold standard treatment for combatting androgenic alopecia

Studysummary This review explores low-level light therapy's potential as a noninvasive treatment for various forms of alopecia, noting its promising results in hair regrowth and density but highlighting the need for standardized protocols and further research.

Our plain-language summary. Not medical advice or a treatment recommendation. Consult a qualified healthcare professional before changing treatment. Full disclaimer

The review highlights the potential of low-level light therapy (LLLT) in treating various forms of alopecia, including androgenetic alopecia, telogen effluvium, and alopecia areata. LLLT has shown promise in promoting hair regrowth by prolonging the anagen phase, increasing vascularization, and reducing inflammation. It is particularly effective when combined with treatments like minoxidil or finasteride for androgenetic alopecia. While LLLT shows subjective benefits for telogen effluvium, more robust studies are needed. For alopecia areata, LLLT is being explored as an adjunctive treatment. Additionally, LLLT may benefit scarring alopecias by reducing inflammation and stimulating follicular activity, though evidence is limited. Overall, LLLT is well-tolerated with minimal side effects, but further research and standardized protocols are necessary to confirm its efficacy and safety across different alopecia types.

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