Low-Level Laser Therapy (LLLT): A To Z Guide

The new best practice for hair and skin treatments is laser technology. Thousands of men and women around the world have used low-level laser light therapy (LLLT) for hair restoration to stop mild to moderate hair loss and regrow hair. 

Low-intensity lasers are applied to the scalp and beard during this non-invasive method of treatment. To promote hair development and improve the density and fullness of hair, low-level laser therapy machines emit a certain wavelength and frequency of light. 

In this article, we have discussed every aspect of low the FDA-approved LLLT, which has an 80% success rate.

What Is A Laser Light Therapy?

Low-level laser therapy (LLLT) is a modern, non-surgical hair loss treatment approved by the FDA. It utilizes laser technology to stimulate cell growth and supercharge hair follicles, resulting in improved volume and combating hair loss.

This painless procedure has no known side effects and is particularly effective in treating androgenetic alopecia, female pattern baldness, as well as other forms of alopecia and hair loss.

Additionally, it can effectively address hair loss caused by pregnancy or menopause. Low light laser therapy can also complement other hair loss treatments like PRP therapy and is often used in conjunction with hair transplant procedures, enhancing their effectiveness.

How Does Laser Light Therapy Work?

Low-level laser therapy (LLLT) is a non-invasive treatment method used to stimulate hair regrowth in individuals experiencing hair loss.

It targets hair follicles by utilizing a specific wavelength of light that possesses the unique ability to be absorbed by the molecules within the follicles. 

By harnessing this light energy, LLLT can effectively shift hair follicles into the growth phase, stimulating the regeneration process and promoting the production of thicker and fuller-looking hair shafts.

Stimulation of ATP Production

During LLLT, photons of light act upon cytochrome C oxidase, a key enzyme within the mitochondria of hair follicle cells.

This interaction prompts the production of adenosine triphosphate (ATP), which serves as the primary energy source for cellular processes. The ATP is then converted to cyclic AMP, releasing energy and stimulating metabolic processes necessary for hair growth.

Increased Vascularization

LLLT also facilitates the release of nitric oxide from cells within the scalp. Nitric oxide acts as a vasodilator, causing the blood vessels to dilate and promoting increased blood flow to the targeted region.

This enhanced vascularization ensures the efficient distribution of vital nutrients and oxygen to the hair roots, supporting their health and growth.

Prevention of DHT Build-up

An excessive build-up of dihydrotestosterone (DHT) is known to contribute to hair loss. LLLT helps prevent the accumulation of DHT, which can negatively affect hair follicles. 

By reducing the concentration of DHT, LLLT helps to maintain the health and integrity of the hair follicles, supporting their growth and minimizing hair loss.

Benefits Of Laser Light Therapy For Hair Fall Treatment

Low-level laser therapy (LLLT) is a non-invasive and safe treatment that has gained popularity for its numerous benefits in promoting hair growth.

This therapy utilizes low-level laser devices that are portable, clean, and painless. It is effective for both men and women, offering a convenient and relatively inexpensive solution for hair restoration.

Moreover, LLLT requires a minimal time commitment and has shown no adverse effects. In this article, we will explore the benefits of low-light laser therapy for hair growth.

Hair growth stimulation

One of the primary benefits of low-light laser therapy is its ability to stimulate hair growth. This treatment has shown promising results in promoting hair regrowth on the top of the head/crown and along the hairline of the forehead.

By delivering low-level laser energy to the hair follicles, LLLT enhances blood flow, increases nutrient delivery, and promotes cellular activity, leading to improved hair growth.

Non-invasive and painless

Low-light laser therapy is a non-invasive procedure that does not require any surgical intervention.

It involves the use of handheld devices that emit low-level laser light, which penetrates the scalp without causing any discomfort or pain. This makes it a preferred choice for individuals seeking a painless hair restoration option.

No reported adverse effects

LLLT has been extensively studied, and no adverse effects have been reported. Unlike some medications or surgical procedures, low-light laser therapy does not carry the risk of significant side effects. 

It is considered a safe treatment option for individuals looking to address hair loss concerns.

Minimal time commitment

Another advantage of low-light laser therapy is that it requires minimal time commitment. Treatment sessions typically last for a few minutes, and the recommended frequency is usually a few times per week. 

This makes it a convenient choice for individuals with busy schedules, as it can be easily incorporated into their daily routines.

Portable devices

LLLT devices are portable, allowing users to undergo treatment in the comfort of their own homes. This eliminates the need for frequent visits to a clinic or salon, providing flexibility and convenience. 

Portable devices make it easier for individuals to maintain a consistent treatment schedule, which is crucial for achieving optimal results.

Relatively inexpensive

Compared to other hair restoration treatments, low-light laser therapy is relatively inexpensive. 

While the cost may vary depending on the brand and model of the device, it generally represents a cost-effective option when compared to more invasive procedures or long-term medication use. 

This affordability makes LLLT accessible to a wider range of individuals seeking hair regrowth solutions.

How Is Low-Level Laser Light Therapy Administered

Low-light laser therapy is administered in a salon by trained professionals. The recommended frequency for treatments is two to three times per week.

During the therapy session, the scalp is exposed to light-emitting diodes (LEDs) for a duration of 8 to 15 minutes. This exposure can be achieved through various methods, such as using a bonnet or head cap that contains the LEDs or employing a handheld comb or brush that emits the laser light.

 The purpose of this therapy is to promote blood circulation in the scalp, which can stimulate hair growth. In certain cases, longer durations of therapy may be necessary to achieve the desired results.

The Results Of LLLT

Many individuals who undergo LLLT experience noticeable improvements in their hair thickness and fullness within 2-4 months. This article explores the timeline of results observed during LLLT treatment, highlighting the key milestones and changes that individuals may experience.

0-3 months

During the initial 0-3 months of LLLT treatment, it is common for individuals to notice hair shedding. This shedding occurs as a result of the body’s reaction to the treatment and should be viewed as a positive sign that the therapy is working effectively.

Although hair shedding can be concerning, it is essential to understand that it is a natural part of the hair growth cycle and indicates that new, healthier hair strands will replace the shed ones.

3-6 months

Between the 3-6 month mark, individuals undergoing LLLT treatment typically observe a reduction in hair shedding. This decrease in shedding is a promising sign that the treatment is starting to have a positive impact on hair loss.

Moreover, during this period, individuals may notice that areas previously affected by balding start to show signs of improvement. The hair in these areas may become fuller and denser, contributing to an overall enhancement in hair volume and appearance.

6-12 months

Continuing LLLT treatment beyond the 6-month mark can yield even more significant results. Individuals often report a noticeable reduction in hair loss during this period, as well as a continued improvement in the thickness and fullness of their hair.

The treatment helps to prevent further hair loss by promoting healthier hair growth and improving the overall condition of the scalp.

Disadvantages Of Laser Treatment For Hair Loss

Low-light laser therapy (LLLT), although considered a promising treatment for hair loss, comes with several disadvantages. Firstly, it has limited effectiveness in advanced cases of hair loss, rendering it ineffective for individuals experiencing severe or extensive hair thinning.

Additionally, one major drawback of LLLT is the extended duration required for noticeable results to appear. Patients often need to undergo several months of treatment before witnessing any significant improvement.

Another crucial factor to consider is that LLLT is not suitable for individuals taking photosensitizing medications, as it can lead to adverse reactions or complications. 

Lastly, the selection of LLLT devices needs to be done with caution, as the effectiveness of the treatment can vary based on the quality and specifications of the device used.

Suitable Candidate For LLLT

The suitable candidates for low-light laser therapy are men and women experiencing thinning hair or pattern baldness due to a hereditary condition.

The Norwood-Hamilton Classification is used to describe the degree of hair loss in men, while the Ludwig-Savin Scale is employed for women. Low-light laser therapy is beneficial for men with hair loss falling within the range of IIa to V, as it promotes hair growth in these individuals. 

For women, the therapy is effective for hair restoration in cases categorized as Ludwig (Savin) I-4, II-1, II-2, or frontal patterns of hair loss.

Cost of low light laser therapy in Hair Loss

The cost of low-level laser light therapy for hair loss treatment varies depending on the type of device being used. Home-based devices generally have a lower price compared to treatments carried out in a dermatological setup.

The cost typically starts from £45 per session, although this can vary depending on the extent of your hair loss and the specific treatment program recommended. It is often recommended to undergo a six-month treatment program for optimal results.

Laser Cap And The Cost Of LLLT Equipment?

There are many portable devices available for low-level laser therapy (LLLT), including tabletop devices, wearable devices, handheld devices, and laser combs. However, it’s important to note that not all devices have received FDA clearance or undergone electrical safety testing.

Therefore, it is advisable to consult a medical professional before choosing a device.

A Google search will reveal countless options for LLLT caps, bonnets, helmets, and other equipment. The cost of these devices varies widely. 

Lower-powered options can be found starting at just under $1,000, while higher-powered options can cost double or triple that price. For example, some devices start at $999, while others can go up to $2,400.

In addition to caps and helmets, laser combs are also popular. These can be found for around $100. There are also LLLT bands available, which typically cost about $700.

When considering purchasing LLLT equipment, it is essential to research the different therapies, procedures, and products available, as well as their safety and effectiveness. Consulting a medical professional can provide valuable guidance in selecting the most suitable device for individual needs.

Low-Level Laser Therapy – A New Alternative To Restore Life To Your Hair

Genetic hair loss is a common concern, and several popular treatments such as finasteride, minoxidil, and hair transplants have been utilized to address this issue.

Low-level laser therapy (LLLT) has emerged as a new and increasingly popular treatment option. In this article, we will focus on two key points regarding low-light laser therapy: the use of laser caps or combs and the suitability of LLLT for different stages of hair loss.

Laser Cap or Comb

LLLT devices, such as laser caps or combs, emit red laser light that gently stimulates the hair follicle cells.

These devices are portable and can be conveniently used at home. Using the device for approximately 15 minutes per day has the potential to strengthen the hair.

It is important to consult a doctor for specific directions on the use of the device and to determine the appropriate device type suitable for individual needs.

Suitability for Different Stages of Hair Loss

Low-level laser therapy is most suitable for patients in the early stage of hair loss.

Individuals in advanced stages of hair loss or with extensive baldness may not find LLLT as effective.

It is recommended to undergo 5 to 10 treatment sessions every two weeks for potential benefits.

Consulting with a healthcare professional is crucial to determine the most suitable treatment option based on the stage of hair loss and individual circumstances.

LLLT Increases Hair Growth

Low-light laser therapy increases hair growth by stimulating dormant hair follicles and targeting regions of the scalp affected by balding.

This technology utilizes specific wavelengths of light to penetrate the scalp, improving blood flow to the follicles and promoting the delivery of nutrients and oxygen necessary for healthy hair growth. 

Clinical studies have shown a remarkable 39% increase in hair growth and significantly improved hair count among individuals undergoing this therapy. The use of a laser cap, which emits low-level laser light evenly across the scalp, has been identified as a safe and effective method to achieve these results.

Laser cap benefits

low light laser therapy, or laser cap therapy, offers several benefits for individuals seeking a drug-free, natural, and convenient solution for hair loss. With no side effects, no downtime, and pain-free treatment,

Drug-free treatment 

Low-light laser therapy offers a drug-free approach to addressing hair loss. Unlike medications or topical treatments that may come with potential side effects or require long-term usage, laser cap therapy focuses on utilizing specific wavelengths of light to stimulate hair follicles and promote hair growth naturally.

100% Natural 

One of the significant advantages of low-light laser therapy is that it is a completely natural treatment method. 

The laser light used in this therapy mimics the natural light spectrum and does not involve any synthetic or artificial substances. This makes it a safe and holistic option for individuals who prefer natural solutions.

No side effects 

Since low-light laser therapy does not involve drugs or invasive procedures, it is generally well-tolerated and has minimal side effects.

Unlike certain medications or treatments that may cause adverse reactions, laser cap therapy is considered a safe and low-risk option, making it suitable for a wide range of individuals.

Done on your time 

One of the convenient aspects of low-light laser therapy is that it can be done on your own time. Laser caps are designed to be portable and can be worn at home or while engaging in daily activities. 

This flexibility allows individuals to integrate the therapy into their routine without the need for frequent visits to a clinic.

No downtime 

Unlike surgical hair restoration procedures or certain treatments that may require downtime for recovery, low-light laser therapy does not involve any downtime. 

There is no need to take time off work or disrupt your regular schedule to undergo this therapy. It offers a hassle-free option for individuals looking for a convenient hair loss treatment.


Low-light laser therapy is a pain-free treatment option. The laser cap emits a low-level light that is not felt as heat or discomfort on the scalp. Individuals can undergo the therapy without experiencing any pain or discomfort, enhancing the overall treatment experience.

Natural, gradual results 

While low-light laser therapy does not offer immediate or overnight results, it provides natural and gradual improvements over time. 

Consistent use of the laser cap stimulates hair follicles, promotes blood circulation, and encourages hair growth. With regular and sustained use, individuals may notice thicker, fuller hair and a reduction in hair loss.

Can be used with other treatments

Low-light laser therapy can be used in conjunction with other hair loss treatments. Whether individuals are already utilizing medications, topical solutions, or even undergoing hair transplant procedures, laser cap therapy can complement these interventions, potentially enhancing their effectiveness and improving overall hair growth outcomes.

Low-Level Laser Therapy For Pattern Balding

Low-level laser therapy (LLLT) is increasingly being advocated as a viable treatment option for pattern balding, a condition that affects a significant percentage of both men and women.

While traditional treatments such as minoxidil, finasteride, and hair transplantation remain popular, LLLT offers a safe and promising alternative or adjunctive approach. LLLT devices emit a specific wavelength of light that can penetrate the scalp, stimulating hair growth and improving hair density. 

Various types of lasers, including Excimer (308 nm), helium-neon (632.8 nm), and fractional erbium-glass (1550 nm) lasers, have been utilized in LLLT for hair loss. This treatment can be administered through different equipment options, including in-salon hoods or overhead panels, bonnet or head caps, and handheld devices.

What To Realistically Expect

Low-light laser therapy (LLLT) is incredibly effective at treating thinner and weaker hair follicles, resulting in thicker, stronger, and healthier hair growth. This treatment significantly improves the appearance and volume of the hair. In approximately 85% of cases, LLLT can slow down or even stop hair loss.

However, LLLT does not work for individuals with long-standing baldness, as there are no hair follicles left to stimulate. The treatment is most effective when started immediately, offering maximum hair restoration benefits during the early stages of hair loss. 

Combining LLLT with platelet-rich plasma (PRP) therapy can yield enhanced results. 

However, it is crucial to manage expectations as the effectiveness of LLLT is limited in the advanced stages of hair loss. Gradual improvement can be observed over several months of consistent treatment.

What Are The Positives Of Laser Treatment For Hair Loss?

Low-light laser therapy (LLLT) offers several positive aspects. Firstly, it is a non-invasive treatment, meaning it does not require any surgical procedures or incisions.

This makes it a safer and more comfortable option for individuals seeking therapy. Secondly, LLLT is a painless procedure, allowing patients to undergo treatment without experiencing any discomfort.

Additionally, LLLT has been reported to have no side effects, ensuring minimal risks or complications for patients. Lastly, one of the significant benefits of LLLT is its ability to increase hair strength. 

This makes it an attractive option for individuals dealing with hair loss or thinning, as it promotes healthier and stronger hair growth.

What Are The Negatives Of Laser Treatment For Hair Loss?

Low-light laser therapy, despite its potential benefits, does come with several drawbacks. Firstly, it can be time-consuming, requiring multiple sessions to achieve noticeable results.

Additionally, the cost of undergoing this therapy can be quite high, making it inaccessible for some individuals. Moreover, it is important to consider that low-light laser therapy may interact with certain medications, potentially leading to adverse effects. 

Lastly, one must be cautious as the long-term safety and effectiveness of this treatment have not yet been fully established.


What happens during the procedure?

During a low-light laser therapy procedure, a specialized laser therapy machine is positioned over the head of the patient. This machine utilizes diodes that emit light at a specific wavelength and frequency of 650nm.
The purpose of this therapy is to deliver low-level light therapy directly to the hair follicles. The treatment targets the entire scalp simultaneously, ensuring comprehensive coverage. 
To enhance the effectiveness of the procedure, multiple lasers are directed toward the areas most commonly affected. This approach aims to achieve improved results in treating hair-related concerns.

What are the risks of LLLT?

While low-light laser therapy is generally considered safe and painless, there is a potential risk of adverse effects associated with incorrect usage or inappropriate application techniques.

Is LLLT painful?

Low-light laser therapy is a painless procedure that typically lasts 20-25 minutes, providing a comfortable experience for patients.

ALCS Hair Transplant and Cosmetic Clinic, under the leadership of the internationally recognized Cosmetic Surgeon, Dr. Sunil Arora, specializes in hair restoration and cosmetic procedures. With a focus on quality, ALCS Clinic offers a range of Hair Transplantation and Cosmetic Surgery Services under one roof.

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