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GlossaryLow Level Laser Therapy (Photobiomodulation Therapy)

uses low-intensity light to stimulate cellular function and healing

Low Level Laser Therapy (LLLT), also known as Photobiomodulation, is a treatment that uses low-intensity lasers or light-emitting diodes (LEDs) to stimulate cellular function. It is commonly used to promote hair growth in cases of alopecia, reduce inflammation, and accelerate tissue repair and healing. The therapy works by emitting specific wavelengths of light that penetrate the skin and are absorbed by cells, enhancing their energy production and promoting regeneration.

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learn Low Level Laser Therapy

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

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research Low-Level Light/Laser Therapy Versus Photobiomodulation Therapy

433 citations , April 2015 in “Photomedicine and laser surgery”

Photobiomodulation Therapy (PBMT) is recommended as a more inclusive term and shows potential benefits in various treatments.

Wnt/β-Catenin and ERK Pathway Activation: A Possible Mechanism of Photobiomodulation Therapy with Light-Emitting Diodes That Regulate the Proliferation of Human Outer Root Sheath Cells

research Wnt/β-Catenin and ERK Pathway Activation: A Possible Mechanism of Photobiomodulation Therapy with Light-Emitting Diodes That Regulate the Proliferation of Human Outer Root Sheath Cells

43 citations , September 2017 in “Lasers in Surgery and Medicine”

LED light therapy may help hair growth by activating certain cell pathways.

research Photobiomodulation Devices for Hair Regrowth and Wound Healing: A Therapy Full of Promise but a Literature Full of Confusion

36 citations , April 2016 in “Experimental Dermatology”

Photobiomodulation may help with hair growth and wound healing, but research is inconsistent and needs better quality studies.

research Photobiomodulation Therapy in Management of Cancer Therapy-Induced Side Effects: WALT Position Paper 2022

31 citations , August 2022 in “Frontiers in Oncology”

Photobiomodulation therapy helps manage cancer treatment side effects but needs more research for optimization.

research Mechanisms of Repigmentation Induced by Photobiomodulation Therapy in Vitiligo

21 citations , January 2019 in “Experimental dermatology”

Light therapy using helium-neon lasers can help restore skin color in vitiligo by promoting skin cell growth and movement.

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community Update July 2025] Most Promising Hair Loss Treatments in Clinical Trials

in Research/Science 265 upvotes 2 months ago

Promising hair loss treatments in clinical trials include Pyrilutamide, GT20029, CB-03-01, and PP405, with potential market releases between 2027 and 2029. Hair cloning remains experimental and expensive, while existing treatments like finasteride, minoxidil, and microneedling continue to be used.