Revitalize Your Hair: The Power of LLLT and PBM for Hair Growth

Low-Level Laser Therapy (LLLT), also known as Photobiomodulation (PBM), has gained attention for its potential in promoting hair growth. Here's a simplified look at what LLLT is and how it works. What is LLLT? LLLT, a term that includes the newer PBM, was discovered in 1967 by Hungarian scientist Endre Mester. He was testing a ruby laser for tumor treatment but instead noticed that the laser sped up wound healing and stimulated hair growth. This surprising result led to the development of LLLT. source https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10564188/#:~:text=This%20study%20found%20that%20LLLT,treatment%20will%20be%20better%20known Why the Name Change to PBM? The term LLLT was later replaced by “Photobiomodulation” (PBM) for a few reasons: Clarification: The term “low” was ambiguous, and other light sources like LEDs were found to be effective too. Scope: PBM describes the use of various light sources (not just lasers) for biological processes. Function: "Modulation" better represents how the therapy can both stimulate and regulate processes. Types of LLLT devices A. HairMax LaserComb B.HairMax LaserBand 82. C.RedRestore Max Laser Cap 272. D.Revage 670 Laser Hood source: https://www.tandfonline.com/doi/full/10.2147/CCID.S184979#d1e430 How Does LLLT Work? LLLT promotes hair growth by energising the cells in hair follicles. Here's a simple breakdown: Targeting Mitochondria: LLLT boosts the activity of mitochondria, the cell's energy producers. Light Absorption: Red light (600–700 nm) and near-infrared light (760–1000+ nm) are most effective. Cell Stimulation: Light stimulates mitochondrial respiration, increasing energy (ATP) and promoting cell growth. What Does Research Say? Studies show that LLLT can improve hair growth and overall scalp health: Wavelengths: Common effective wavelengths are red light (630–690 nm) and infrared light (820–880 nm). Some studies suggest that 830 nm might be particularly effective. Effectiveness: A helmet-like LLLT device showed improvements in hair richness, thickness, and growth rate. After 24 weeks, most participants reported significant hair growth improvement. Scalp Conditions: LLLT can reduce oil production and manage scalp conditions, though more research is needed for those with specific issues like seborrheic dermatitis. source https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10564188/#:~:text=This%20study%20found%20that%20LLLT,treatment%20will%20be%20better%20known. Hair Growth Cycles Hair grows in three main phases: Anagen (Growth Phase): Lasts 2 to 6 years; about 90% of hair follicles are in this phase. Catagen (Transition Phase): A short phase lasting 1 to 2 weeks. Telogen (Resting Phase): Lasts about 5 to 6 weeks before shedding occurs. sourde: https://www.sciencedirect.com/science/article/pii/S2666328723001128#fig1 My Conclusions LLLT (Low-Level Laser Therapy) or PBM (Photobiomodulation) shows promise for hair regrowth by boosting cellular energy and supporting hair follicle health. However, in my opinion, it’s not a one-size-fits-all solution. While it has potential, it's crucial that it’s not marketed simply as a quick fix or money-maker. From my experience and conversations with colleagues, there is still more research needed in this area. We understand a lot, but not enough to confidently say that using a specific dose of light five times a week will work for everyone. Several factors must be considered, with the most important being the level of inflammation in the scalp and around the hair follicles. LLLT can reduce inflammation and stimulate hair growth, but we don’t yet know the exact energy levels or treatment durations that will work best to reduce inflammation while also boosting healthy hair growth. It's important to be careful, as we want to avoid overstimulating inflamed cells. I’m not saying I don’t recommend LLLT—quite the opposite. I just believe it needs to be carefully tailored for each person, with the guidance of a specialist, to determine the best frequency and duration for their specific condition. Please note: The information provided here is for informational purposes only and does not constitute medical advice. If you have any serious health issues, are taking medications, or have concerns about your health, please consult your GP or a medical advisor.