Low-Level Laser Therapy (LLLT): How Does it Work for Hair Loss?

Published: 2025-09-26

Updated: 2025-09-26

3 mins

Hair loss is a concern that affects millions of men. While there are many treatment options available, one approach gaining attention is low-level laser therapy. In this article, we’ll explore what low level laser therapy is, when it was invented, its various uses – including hair loss, skin, and nail treatments – its effectiveness, typical costs, and alternative options for addressing hair thinning.

What is Low-Level Laser Therapy (LLLT)?

Low-level laser therapy (or LLLT) is a non-invasive treatment that uses low-intensity lasers or light-emitting diodes to stimulate cellular activity. In simple terms, what low level laser therapy does is encourage your body’s cells to function more efficiently, boosting blood flow and promoting healing and regeneration.

LLLT is used for a variety of purposes, from encouraging hair regrowth and reducing hair thinning to improving skin conditions like scars and wrinkles. Essentially, it works by delivering light energy that penetrates the skin and stimulates the cells in targeted areas, promoting healthier growth and repair.

As for who uses low-level laser therapy, it’s commonly offered by dermatologists, hair restoration clinics, and cosmetic practitioners. Some people also use FDA-cleared at-home devices for hair or skin treatments under guidance from a healthcare provider.

History of LLLT

Low-level laser therapy has been around longer than many people realize, dating back to the 1960s. Hungarian physician Endre Mester is often credited with its discovery when he observed that low-powered laser light stimulated faster hair regrowth and wound healing in lab animals.

This unexpected finding sparked decades of medical research into how light energy interacts with cells. Over time, LLLT became a subject of interest in dermatology, sports medicine, pain management, and cosmetic procedures. By the early 2000s, advances in technology made it possible to create specialized devices for targeted treatments, including hair restoration. Today, LLLT continues to be studied and refined, with growing recognition of its potential for non-invasive therapy in both medical and aesthetic fields.

Common Uses of LLLT

One of the most talked-about applications of low-level laser therapy is hair restoration. Research suggests that by improving blood flow and stimulating the hair follicles, LLLT can encourage new growth and slow down thinning in certain types of alopecia. 

Beyond hair, LLLT is also used to improve skin health. By stimulating collagen production, it can support the healing of scars, reduce the appearance of fine lines and wrinkles, and enhance overall skin texture. Cosmetic practitioners often incorporate laser therapy as part of anti-aging treatments.

Nail fungus is another condition that may benefit from LLLT. The light energy penetrates the nail and targets the fungus without damaging surrounding tissue, offering a non-invasive alternative to oral antifungal medications.

In addition, LLLT has been studied for broader therapeutic purposes. It has been used to support wound healing, ease joint pain, and reduce inflammation in sports injuries and arthritis. These wider applications continue to be explored as researchers look for new ways to harness the benefits of light therapy.

Costs and Accessibility

For anyone considering this treatment, the cost of low-level laser therapy can be a determining factor. Typically, the cost of LLLT depends on whether you’re opting for in-office sessions or at-home devices.

In-clinic treatments can range from a few hundred to several thousand dollars over the course of therapy, since multiple sessions are usually needed for results. On the other hand, FDA-cleared at-home laser caps and combs are often a one-time purchase that can range anywhere from a few hundred dollars to well over $1,000, depending on the brand and technology.

Since LLLT for hair growth, skin, or nail conditions is generally considered cosmetic rather than medically necessary, most insurance plans don’t cover the cost. Patients typically pay out of pocket whether they choose a clinic-based treatment program or purchase a device for home use.

How to Use Low-Level Laser Therapy

Most home-use devices – such as laser caps or combs – are designed to be used several times a week, with sessions typically lasting between 15 and 30 minutes. Consistency is key and results typically appear gradually over the course of several months. In-clinic treatments follow a similar schedule, though the provider may adjust frequency and duration based on your needs.

Recommended devices are those cleared by the FDA, since they’ve been evaluated for safety and effectiveness. Using a reputable device helps reduce the risk of skin irritation or ineffective treatment.

As for precautions, LLLT is considered safe for most people, but it’s important to follow the manufacturer’s instructions or your provider’s guidance. Protective eyewear may be advised for some devices, and individuals with certain medical conditions or who are taking photosensitizing medications should consult their doctor before starting therapy.

Alternative Hair Loss Treatments

While low-level laser therapy can be an option, it isn’t the only approach available for addressing thinning hair. Medications remain a mainstay – minoxidil is an over-the-counter topical solution that can help stimulate growth, while finasteride is a prescription pill accessible through Rex MD that works by reducing the hormone linked to hair loss in men.

For those looking beyond medication, platelet-rich plasma (PRP) therapy has become increasingly popular. This involves drawing a small amount of the patient’s blood, processing it to concentrate the platelets, and then injecting it into the scalp to encourage follicle activity.

Hair transplant surgery is another route, offering permanent results by relocating healthy follicles to thinning areas. While effective, it requires a more invasive procedure and recovery time compared to non-surgical options.

Lifestyle and nutrition also play a role. Factors like stress, poor sleep, and nutrient deficiencies can contribute to shedding, so supporting your body with a balanced diet, proper rest, and stress management may help complement medical treatments.

How Can Rex MD Help?

While LLLT can be an effective hair regrowth strategy for some, it may not be accessible for every man. Rex MD helps make hair regrowth simple, affordable, and discreet.

Rex MD offers finasteride for hair growth. Finasteride is a FDA-approved once-a-day pill that’s clinically proven to reverse hair loss and regrow hair.

Hair loss doesn’t need to be your fate – Rex MD has got you covered. Get started today with a free, online consultation to learn more about the right plan of action for your hair.