Is laser therapy really effective for hair regrowth? Here’s what the latest clinical evidence says about LLLT in 2025.
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Low-level laser therapy stimulates mitochondrial activity in hair follicle cells, improving energy production and growth signaling. Devices typically use 650 nm red light.
A 2024 double-blind study in Lasers in Surgery and Medicine found a 35% increase in hair density after 24 weeks of home LLLT use compared to placebo.
Most devices recommend 15–20 minutes, 3 times weekly. Results are best when combined with minoxidil or oral supplements.
Consult with a dermatologist or healthcare provider before starting any new hair loss treatment. Always read labels and follow instructions carefully.
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