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Trending Red Light Therapy For Hair Loss And Growth: Does It Really Work?

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Hair loss can be a frustrating and emotionally challenging experience for many individuals. As we age, factors such as genetics, hormonal changes, stress, and medical conditions can contribute to thinning hair or baldness. While traditional treatments like medications and hair transplant surgery are available, many people are seeking alternative, non-invasive solutions.

One emerging therapy that has gained significant attention in recent years is red light therapy, also known as low-level light therapy (LLLT). This innovative approach has shown promising results in stimulating hair growth and potentially reversing hair loss.

Key takeaways:

2014 study found low-level laser therapy safe and effective for hair growth.
2013 study showed a 39% increase in hair growth in 41 males aged 18-48.
it’s noninvasive
it’s painless
there are no side effects
it increases hair strength

Red Light Therapy For Hair Loss: An Effective Solution

Red Light Therapy For Hair Loss And Growth

Red light therapy, also known as low-level light therapy (LLLT) or photobiomodulation, involves exposing the scalp to specific wavelengths of red or near-infrared light. This light is believed to stimulate the hair follicles and promote hair growth by increasing cellular energy production and blood flow to the scalp.

The therapy typically uses LED devices that emit light in the range of 650 to 670 nanometers (nm) for red light and 810 to 830 nm for near-infrared light. These wavelengths are considered safe and effective for stimulating hair growth, as they can penetrate the scalp and reach the hair follicles without causing any harm.

Is Red Light Therapy For Hair Loss Effective?

While the concept of using light therapy for hair growth may seem unconventional, numerous scientific studies and research have demonstrated its effectiveness. Many individuals who have undergone red light therapy for hair loss have reported positive results, including increased hair density, thickness, and overall improvement in hair quality.

One meta-analysis published in 2019 examined eight clinical studies involving 11 double-blind, randomized controlled trials. The analysis revealed a significant increase in hair density for individuals who received red light therapy compared to those in the sham or placebo groups. Another study published in 2017 analyzed 11 studies and 680 patients treated with red light therapy for hair growth. The researchers noted significant improvements in hair count, hair density, hair thickness, and tensile strength.

While the results are promising, it’s important to note that individual responses may vary, and the therapy’s effectiveness can be influenced by factors such as the severity of hair loss, the specific device used, and the treatment protocol followed.

Dermatologists Say About Red Light Therapy

Dermatologists and hair loss experts have generally expressed support for red light therapy as a viable treatment option for hair loss. However, they emphasize the importance of using it as part of a comprehensive approach and recommend combining it with other treatments for optimal results.

“Red light therapy can be an effective component of a hair loss treatment plan,” says Dr. Michele Susan Green, a board-certified cosmetic dermatologist in NYC. “While it may not be a standalone solution for severe cases, it can complement other treatments and potentially enhance their effectiveness.”

Dermatologists also caution that realistic expectations should be set, as results can vary based on individual factors and the specifics of the device and treatment protocol used.

How Red Light Therapy Helps Treat Hair Loss?

Red light therapy is believed to address hair loss through several mechanisms. First, the specific wavelengths used in the therapy are thought to stimulate the mitochondria in the hair follicles, leading to increased cellular energy production and improved nutrient delivery to the hair roots.

Second, the therapy is believed to increase blood flow and circulation to the scalp, providing the hair follicles with essential nutrients and oxygen needed for a healthy scalp and natural hair growth.

Additionally, red light therapy may help reduce inflammation in the scalp, which can contribute to hair loss or hinder hair growth. By reducing inflammation, the therapy creates a more favorable environment for hair follicles to thrive and produce healthy hair strands.

Research Findings About Red Light Treatment For Hair Health

Numerous studies have explored the effectiveness of red light therapy for hair loss, and the findings are encouraging. A 2018 meta-analysis reviewed 22 studies and concluded that red light therapy was a superior treatment option compared to hormone-regulating drugs like finasteride and dutasteride, with no reported side effects.

Another study, published in 2018, conducted a randomized, double-blind trial with 100 participants suffering from male pattern baldness. One side of each participant’s head received red light therapy treatment three times a week for 30 minutes, while the other side received a sham treatment. After six months, the side treated with red light therapy showed significantly greater hair coverage, hair thickness, and hair regrowth.

In a study focused on female pattern baldness, researchers found that women receiving red light therapy at 650 nm experienced a 51% increase in hair counts after the treatment period.

These studies, along with many others, provide strong evidence that red light therapy is an effective and safe natural treatment for hair loss in both men and women.

Can Red Light Therapy Reverse Gray Hair?

While the primary focus of red light therapy has been on promoting hair growth and increasing hair density, some individuals have reported a potential benefit in reversing gray hair. However, the scientific evidence supporting this claim is limited.

While anecdotal reports exist, more research is needed to determine if red light therapy can indeed help reverse gray hair or if the observed effects are temporary or limited.

Best Red Light Therapy Devices For Hair Growth

If you’re considering trying red light therapy for hair loss, it’s crucial to choose a high-quality device from a reputable source. Here are some recommended options:

LaserCap HD+: This FDA-cleared device is designed to provide full scalp coverage and is portable, allowing users to resume daily activities during treatment.

Revian Red Hair Growth System: Another FDA-cleared option, the Revian Red cap system is convenient and has been shown effective in clinical trials.

HairMax Ultima 9 Classic LaserComb: A more budget-friendly choice, this FDA-cleared comb device can be used while relaxing or watching TV, although it requires more time for full scalp coverage.

iRestore Professional Laser Hair Growth System: An affordable cap option with extended scalp coverage and positive user reviews.

Theradome Pro Laser Hair Growth Helmet LH80: This cordless, FDA-cleared helmet provides a wide surface area for treatment.

When selecting a device, look for FDA clearance, clinical trial data, and reviews from reputable sources to ensure safety and effectiveness.

Pros And Cons Of Red Light Therapy

Like any treatment, red light therapy for hair loss has its advantages and disadvantages. Here are some of the key pros and cons to consider:


  • Non-invasive and painless
  • No known severe side effects
  • Can be used in combination with other hair loss treatments
  • Promotes hair growth and improves hair density and thickness
  • Suitable for both men and women with various types of hair loss


  • Can be expensive, with some devices costing thousands of dollars
  • Requires consistent, long-term use to maintain results
  • Results may vary depending on individual factors
  • Limited data on long-term safety and effectiveness
  • May not be effective for advanced stages of hair loss

When considering red light therapy for hair loss, it’s essential to weigh these pros and cons and consult with a dermatologist to determine if it’s the right choice for your specific situation.

To Round Off

Red light therapy has emerged as a promising natural solution for addressing hair loss in both men and women. With its non-invasive nature, lack of severe side effects, and growing body of scientific evidence supporting its effectiveness, it offers an appealing alternative or complementary treatment to traditional hair loss medications and procedures.

While the results may vary, and individual responses may differ, many individuals have reported positive outcomes, including increased hair density, thickness, and overall improvement in hair quality. By stimulating the hair follicles, increasing blood flow, and reducing inflammation, red light therapy creates a favorable environment for healthy hair growth.

If you’re considering red light therapy for hair loss, it’s crucial to consult with a dermatologist, choose a reputable device, and have realistic expectations. With patience and consistency, this natural approach may provide the solution you’ve been seeking for your hair loss concerns.


    1. How long does it take to see results from red light therapy for hair loss?

    Results can vary, but most individuals can expect to see some improvements in hair growth and density within 12 to 26 weeks of consistent treatment. However, it’s important to be patient and continue with the recommended treatment protocol.

    2. Is red light therapy safe for all hair types and skin tones?

    Yes, red light therapy is generally considered safe for all hair types and skin tones. The wavelengths used in the therapy are non-ionizing and do not cause any harm to the skin or hair.

    3. Can red light therapy regrow hair?

    Yes, red light therapy can stimulate hair regrowth for both men and women with pattern baldness, according to numerous peer-reviewed studies. It works by increasing hair count, density, and thickness without negative side effects.

    4. How much is red light hair therapy?

    The cost of red light therapy for hair loss varies widely, ranging from $25 to $150 or more per professional session. At-home devices typically cost $100 to over $1000.


    WebMD(n.d) Dr. Michele Susan Green, MD Available online at: https://doctor.webmd.com/doctor/michele-green-9b41afb2-54f1-4e61-be96-f6e388300f26-overview

    NCBI(2021) Hair Growth Promoting Effects of 650 nm Red Light Stimulation on Human Hair Follicles and Study of Its Mechanisms via RNA Sequencing Transcriptome Analysis Available online at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8577899/

    Jessica Rivera

    Dr. Jessica Rivera has more than 10 years of experience in the cosmetic industry as a hair care specialist. As a licensed cosmetologist, she has an in-depth understanding of hair and scalp health and a strong desire to support others in achieving their hair goals. Dr. Jessica is also a reputable author and supplement reviewer, specializing in hair care products and ingredients. Her engaging and informative writing style makes complex topics accessible to a wide audience. Dr. Jessica is committed to assisting her readers in making well-informed decisions regarding their hair care routines in order to attain healthy, beautiful hair.

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