Low Level Laser Light Therapy (LLLT) for Hair Loss

Low Level Laser Light Therapy (LLLT) is a non-invasive treatment option for hair loss that has gained attention in recent years. This treatment utilizes low-level lasers or light-emitting diodes (LEDs) to deliver red light or near-infrared light to the scalp, with the aim of promoting hair growth.

History of LLLT for Hair Loss: The use of laser therapy for hair loss traces back to the 1960s when researchers discovered that low-level laser light had a stimulating effect on hair growth. Over the years, LLLT has evolved, and today, it is commonly used in various devices, such as laser combs, helmets, and caps, for home or clinical use.

Mode of Action of LLLT: The exact mechanism of action of LLLT for hair loss is not yet fully understood. However, it is believed that the red light or near-infrared light emitted by the lasers or LEDs penetrates into the scalp and stimulates the hair follicles. This stimulation is thought to increase blood flow, reduce inflammation, and promote cellular activity within the hair follicles, leading to improved hair growth.

Reference Studies: Several studies have explored the effectiveness of LLLT for hair loss. A randomized controlled trial published in the American Journal of Clinical Dermatology in 2014 found that LLLT using a red light-emitting diode (LED) helmet improved hair counts and hair thickness in men with androgenetic alopecia (male pattern hair loss) after 26 weeks of treatment¹. Another study published in the Lasers in Medical Science journal in 2019 reported that LLLT using a laser comb improved hair density and thickness in women with female pattern hair loss².

While there is evidence suggesting the potential benefits of LLLT for hair loss, it is important to note that individual results may vary, and more research is needed to fully understand its efficacy and long-term effects. It is crucial to consult with a qualified healthcare professional before starting any LLLT treatment for hair loss to determine if it is suitable for your specific condition and to follow the recommended treatment protocol.


1. Jimenez JJ, Wikramanayake TC, Bergfeld W, et al. Efficacy and Safety of a Low-level Laser Device in the Treatment of Male and Female Pattern Hair Loss: A Multicenter, Randomized, Sham Device-controlled, Double-blind Study. Am J Clin Dermatol. 2014;15(2):115-127. doi:10.1007/s40257-013-0060-6

2. Lanzafame RJ, Blanche RR, Bodian AB, et al. The growth of human scalp hair in females using visible red light laser and LED sources. Lasers Med Sci. 2019;34(2):323-328. doi:10.1007/s10103-018-2601-7

Used for: Male Pattern Baldness, Female Pattern Baldness