Red light therapy is a non-invasive treatment that uses artificial light and provides numerous health benefits, from improving skin health to relieving pain, from wound healing to hair growth, and much more.
But, red light therapy has different ranges of wavelength, and each type of wavelength range can treat specific conditions. That’s why, it is crucial to identify the use of the exact red light therapy wavelength.
No worries! Because, in this super, ultimate guide, we are going to discuss everything about the wavelengths of red light therapy and near-infrared light therapy and what treatments each wavelength is able to treat. With scientific research and much more. Whether you are new to this concept or want to seek in-depth information, this guide will show you how different wavelengths can impact various conditions and improve overall well-being. So, tighten up your seatbelt, and let’s dive in.
What is wavelength?

Let’s first clarify the concept of wavelength! Wavelength refers to the distance between two consecutive peaks or troughs of the wave. In the context of light therapy, wavelengths are measured in nanometers and nm. One nanometer is equal to one billionth of a meter. It corresponds to different colors of light, including blue, green, violet, yellow, and red. Each has unique characteristics and different effects on the body. But we are going to only focus on wavelengths of red light and near-infrared light.
The nature of light
Light travels in waves, and they emit specific properties, in which wavelength determines the color of light, while, frequency measures the number of waves that cycle per unit of time. So, the shorter the wavelengths, the higher the frequency, and vice versa. Wavelength plays a crucial role in determining how light interacts with matter, including our skin and tissues.
The visible light spectrum

Simply imagine a rainbow! Those beautiful colours encompass the visible light spectrum, which we can see with our eyes. It ranges from shorter wavelengths such as violet and blue to longer wavelengths such as green, yellow, orange, and red. In red light therapy, our focus lies primarily on the red and near-infrared regions of this spectrum.
How do different wavelengths of red light therapy affect cellular activity, backed by science?

Red light therapy is based on the principles of photobiomodulation, where photons of specific wavelengths interact with cells, which trigger various biochemical processes. When they are applied to the skin, both red and near-infrared light can penetrate deep into the tissues, which can stimulate various cellular activities and promote healing.
Not only that! But, at the cellular level, red light therapy enhances the mitochondrial functions, which are responsible for producing energy in the form of ATP (adenosine triphosphate), which is the main fuel of our cellular energy. By increasing ATP production, red light therapy fuels cellular repair and regeneration processes. That results in a wide range of therapeutic benefits.
With that said, Let’s now head over to the wavelengths of red light therapy and its specific treatments.
Wavelengths in red light therapy
The red light spectrum, which utilises wavelengths ranging from 600 to 700, offers specific types of therapeutic benefits. The red light in this range has shown promising results in improving skin health, reducing inflammation, promoting wound healing, stimulating hair growth, and improving mental well-being. Let’s explore the specific treatment of red light therapy based on its wavelength.
Wavelength for skin rejuvenation and anti-ageing

Red light therapy can work wonders for your skin by harnessing the power of specific wavelengths of red light therapy from 630 nm to 660 nm. It helps to stimulate collagen production, which is a protein that helps to smooth and boost elasticity in your skin. As we grow older, our bodies produce less collagen, which can reduce wrinkles and fine lines. It also helps to improve skin conditions such as acne, rosacea, and psoriasis and can improve overall skin tone and texture.
A Study published in the Journal of Cosmetic and Laser Therapy found that red light therapy, with a wavelength of 630 nm, significantly improved skin complexion, texture, and firmness and helped reduce wrinkles and roughness in the skin.
Another study, which was published in photomedicine and laser surgery, found that red light wavelengths of 660 nm have resulted in increased collagen production and improved skin elasticity.
Wavelengths for pain relief and inflammation
Whether you’re dealing with chronic pain or an acute injury, red light therapy can give you relief from pain. Wavelengths between 630 nm and 660 nm have been shown to effectively evaluate pain, reduce inflammation, and promote faster healing. These specific wavelengths are also commonly used for managing chronic pain conditions, acute injuries, and muscular skeletal disorders.
A Study published in the general literature of alternative and complementary medicine found that red light therapy with wavelengths of 632.8 nm has significantly helped in evaluating pain and reducing inflammation and impatience with temporomandibular joint disorders.
Another piece of research published in Laser in Surgery and Medicine demonstrated that a red light wavelength of 660 nm reduced pain and improved functional outcomes in patients with chronic low back pain.
Wavelength for wound healing and tissue repair

From minor cuts to post-surgical wounds, red light therapy wavelengths from 630 nm to 660 nm have demonstrated their effectiveness in accelerating the healing process for wounds and promoting tissue repairs.
A scientific Study that was published on wound repair and regeneration found that red light therapy with wavelengths of 635 nm increased fibroblast proliferation and accelerated wound healing.
Another study, which was published in the Journal of Clinical Laser and Medicine, showed that red light therapy with wavelengths of 660 nm, improved wound healing and increased collagen synthesis in patients with diabetic foot ulcers.
Wavelengths for hair growth stimulation

Hair loss and killing hair can be disturbing, but red light therapy offers a non-invasive solution for combating hair loss. Red light therapy wavelengths between 630 and 660 nm have shown promising results in stimulating hair growth and improving hair health. This specific wavelength can help to promote increased blood flow to the hair follicles, enhance nutrients delivery, and prolong the growth phase of the hair cycle.
A study that was published in Laser Surgery and Medicine demonstrated that red light therapy with wavelengths of 655 nm increased hair density and thickness in patients with Andrew’s genetic alopecia.
Another research paper published in the International Journal of Trichology showed that red light with a wavelength of 660 nm stimulated hair growth in both men and women with androgenetic alopecia.
Wavelengths for mental health and sleep

Red light therapy isn’t limited to physical well-being; it can also benefit your mental health. Red light, wavelength ranges between 630 and 660 nm, has been associated with improving mood, reducing symptoms of depression, and regulating circadian rhythm. By targeting these specific wavelengths, red light therapy can help restore balance to sleep patterns and promote overall mental health.
A study that was published in JAMA Psychiatry showed that red light therapy with a wavelength of 660 nm significantly reduced depressive symptoms in patients with major depressive disorder.
Another study, which was published in Chronobiology International, demonstrated that exposure to red light wavelengths of 630 to 660 nm before bedtime improves sleep quality and increases total sleep time in individuals with insomnia.
Wavelengths of red light therapy for muscle recovery and fatigue reduction.

The red light therapy wavelength range from 630 nm to 616 nm has demonstrated benefits in accelerating muscle recovery and reducing post-exercise fatigue.
A Study published in the Journal of Clinical Laser Medicine and Surgery investigated the effects of red light therapy with wavelengths of 635 nm to 650 nm on muscle performance and recovery. The finding reveals that athletes treated with red light experienced a reduction in muscle fatigue and improved muscle function.
Another piece of research published in the Laser in Medical Science examines the effects of red light therapy with wavelengths of 660 nm on exercise and muscle fatigue. The study showed that athletes who received red light therapy experienced faster recovery and reduced muscle soreness, allowing them to train more effectively.
Wavelengths of Near-infrared light therapy

As we mentioned above, red light therapy uses wavelength ranges from 600 to 700 nm; on the other hand, near infrared light therapy uses wavelength ranges from 700 to 1200 nm. Near-infrared light therapy has the ability to penetrate deeper into the skin, tissues, and even organs, which makes it effective for treating conditions such as muscle recovery, neurological disorders, immune function, and cellular energy production. Now let’s discover the specific applications of near-infrared light therapy based on its wavelength.
Wavelength for deep tissue penetration and muscle recovery

Near-infrared light therapy, whose wavelength ranges between 800 and 850 nm, has the ability to penetrate deep into the tissues, which makes it ideal for improving muscle soreness, inflammation, and injuries. These specific wavelengths help to improve circulation, reduce oxidative stress, and enhance cellular metabolism.
A study that was published in the Journal of Clinical Laser Medicine and Surgery found that near-infrared light therapy with wavelengths of 830 nm significantly reduced muscle soreness and muscle recovery in athletes.
Another Study published in the Laser in Medical Science demonstrated that near-infrared light therapy with wavelengths of 810 nm accelerated muscle recovery and reduced inflammation in patients with exercise-induced muscle fatigue.
Wavelengths for neurological conditions and brain health

Near-infrared light therapy wavelengths of 810 to 830 nm demonstrated promising results and improved neurological conditions such as Alzheimer’s disease, Parkinson’s disease, and traumatic brain injuries. These specific wavelengths have been shown to enhance mitochondrial function in brain cells, reduce inflammation, promote neuroplasticity, and improve cognitive function.
In a study published in the Journal of Alzheimer’s Disease, Sean that near infrared light therapy with wavelengths of 810 nm improved cognitive function and reduced brain atrophy in patients with mild cognitive impairment.
Another Study published in the field of neurological research demonstrated that near-infrared light therapy with wavelengths of 830 nm improved motor functions and reduced inflammation in patients with Parkinson’s disease.
Wavelengths for immune function and cellular energy.
Near-infrared light therapy wavelengths from 850 to 880 nm have been associated with improving immune function and boosting cellular production. These specific wavelengths stimulate the release of nitric oxide. A molecule with various positive effects on immune responses, cellular metabolism, and overall vitality.
A study published in the Journal of Clinical Rheumatology showed that near-infrared light with wavelengths of 830 nm improved immune function and reduced inflammatory markups in patients with rheumatoid arthritis.
Another piece of Research published in the Laser in Surgery and Medicine journal demonstrated that near-infrared light therapy with wavelengths of 850 nm boosts cellular ATP (adenosine triphosphate) production and improves cellular metabolism in human fibroblast cells.
Wavelengths of near-infrared light therapy for endurance and energy enhancement.
Near-infrared light therapy’s wavelength range from 800 nm to 850 nm has great potential for enhancing endurance, improving energy production, and improving overall athlete performance.
A Study that was published in the International Journal of Sports Physiology investigated the effectiveness of near-infrared light therapy with wavelengths of 800 nm to 815 nm on cycling performance. The results demonstrated that athletes treated with near-infrared light therapy experienced enhanced endurance, improved oxygen utilisation, and increased energy.
A study published in the European Journal of Applied Physiology determined the effectiveness of near-infrared light therapy with wavelengths of 810 nm on muscle performance and metabolism. The study found that athletes who received near-infrared light therapy experienced improvements in muscle oxidative capacity and an increase in energy production.
Which wavelength is best for you, determining the optimal wavelength?
To determine the optimal wavelength, you need to ask questions like, What is your condition? What kind of desired outcomes do you want to obtain after these treatments? Do you want to improve your skin’s health? Do you want relief from pain? Or are you looking for wound healing?
For instance, when it comes to skin rejuvenation and anti-aging, red light therapy with wavelengths of 630 nm to 660 nm has been found to stimulate collagen production, reduce fine lines and wrinkles, and improve overall skin tone and texture. On the other hand, near-infrared light therapy wavelengths from 800 to 850 nm have shown promising results in promoting deep tissue penetration and muscle recovery.
Therefore, selecting the optimal wavelength for specific treatments requires consideration of various factors, such as the condition being addressed and the desired therapeutic outcome. Extensive scientific research and clinical studies have shed light on the efficacy of specific wavelengths for different applications.
So, when exploring red light therapy devices, it’s important to consult with renowned scientific studies and healthcare professionals, who can help you determine the suitable wavelength for your specific needs.
Selecting the right light therapy devices.
When considering a red light or near infrared light therapy device, it’s important to choose the one that provides the desired wavelengths and features that are necessary for your specific needs. You should consider some factors, which include the device’s power output, wavelength options, treatment area coverage, and safety features.
Popular devices on the market today offer a wide range of customizable settings to cater to different therapeutic requirements.
What safety considerations should you look for?
Well, numerous scientific studies and studies have shown that red light and near-infrared light therapy are both generally considered safe. However, there are some precautions to keep in mind.
- Follow the manufacturing guidelines. You should always read the manufacturing guidelines and follow the recommended treatment protocol and safety instructions that are provided in the manufacturing instructions.
- Eye protection, You should avoid direct exposure to the light source, and you should always wear eye protection goggles before undergoing any red light or infrared light therapy sessions.
- Consult with the healthcare professionals. If you have any pre-existing medical conditions, are you taking any medications that may be photosensitive or may make you concerned about using light therapy? You should consult with your healthcare professionals so they can give you relevant and specific advice for your desired needs.
With that said, let’s address some frequently asked questions you may have.
Can red light therapy help with acne?
Yes! Red light therapy can help improve acne. The specific wavelengths that we already mentioned above, from 630 nm to 660 nm, have been shown to reduce inflammation, promote healing, and improve overall skin health. By targeting specific areas of acne, red light therapy can help reduce acne breakouts and improve the overall appearance of your skin.
Is red light therapy safe for all skin types?

Surprisingly, yes! Red light therapy is generally safe for all skin types because, it is a non-invasive therapy and does not cause damage to the skin. However, it is highly recommended to consult with your medical doctors and talk about your skin type so they can give you personalised advice. especially, if you have any skin conditions or skin concerns.
Can red light therapy be used along with other skincare treatments?

Yes, red light therapy can be used alongside other skincare treatments. In fact, it is often combined with other treatments such as facials and serums to enhance its effects. Red light therapy can help improve the absorption of skincare products and overall skin health.
How long does it take to see results from red light therapy treatment?

In addition, red light therapy can also help to treat acne by, reducing inflammation and killing bacteria that, cause acne, which can help to achieve smooth appearance and structure of skin.
Reduce inflammation and pain relief.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.Red light therapy is also popular in pain relief, it has shown effective results in reducing pain associated with conditions like: osteoarthritis, fibromyalgia, chronic pain, joint pain and back pain relief. This therapy also helps in reducing inflammation and improving cellular function, which can lead to pain reduction and faster healing. Well, some studies has also shown that, red light therapy can reduce muscle soreness and can improve recovery time after exercise.
Improving athlete’s performance.

Red light therapy can help to improve athletic performance by boosting energy levels and increasing circulation by, increasing adenosine triphosphate (ATP) as mentioned above, the more ATP production increases, the more Cellular energy function. By the increase in ATP production, red light therapy can help in improving healing Power and reduce muscle soreness. Additionally, this therapy can help to improve recovery time, which can enable athletes to work, train harder and recover faster.
Better sleep quality.

Red light therapy has also shown to help in improving overall sleep quality by, the promotion of serotonin this therapy, helps in maintaining sleep patterns and regulating overall sleep quality, which means, this therapy is especially beneficial for those people who suffer from insomnia and other sleep disorder.
Hair growth.
You will be surprised to hear that, red light therapy can also help to stimulate hair growth. It works by increasing blood flow to the hair follicles and stimulating cellular activity. This therapy has been shown to be effective at treatment of hair loss caused by androgenetibuc alopecia, which is a common form of hair loss.
You will be surprised to hear that, red light therapy can also help to stimulate hair growth. It works by increasing blood flow to the hair follicles and stimulating cellular activity. This therapy has been shown to be effective at treatment of hair loss caused by androgenetic alopecia, which is a common form of hair loss.
The bottom line.
With effective and numerous benefits of red light therapy, from improvement of skin health, better in sleep quality, recovery hair loss, improving athlete’s performance to pain release and reduce inflammation. Can be a great tool or device that, can be even used at home, and by, reading proper instructions given on the device, can help to use red light therapy more carefully.
The time it takes to see results from red light therapy can vary depending on the individual and the specific condition they are treating. Some people have noticed improvement after just a few sessions, while others have noticed improvement after several weeks of sessions. It’s important to be patient and consistent with sessions to achieve maximum benefits.
Is near-infrared light therapy beneficial for athletes?
Are there any side effects of red light therapy?
Red light therapy is a non-invasive and safe treatment, and the chances of having side effects from it are very low. Some people experience minimal or mild dryness and redness in the skin, but it only lasts for a few minutes or less and vanishes after a few minutes or less. It’s important to follow the recommended guidelines and avoid overexposure to the light source to have a safe treatment.
Can red light therapy be used on pets?

Yes, regular therapy can be used on pets just like on humans. Animals can get therapeutic benefits from red light therapy. However, it’s important to consult with a veterinarian before using red light therapy on pets to ensure proper usage and safety.
Can red light therapy be used on children?

Yes, red light therapy can be used on children, but it is essential to consult with healthcare professionals before using any red light therapy; they can provide guidance on appropriate usage and determine if it is suitable for your child’s specific needs. The healthcare professionals can assess the child’s condition and provide appropriate recommendations to ensure safety and overall well-being.
Is red light therapy safe during pregnancy?
Well, red light therapy is generally considered safe, but, it is recommended to consult with your healthcare professionals before undergoing a red light therapy session during your pregnancy. They can provide specific and personalised advice based on your individual circumstances and ensure the safety of your baby.
Can red light therapy help with joint pain and arthritis?
Yes, red light therapy has shown promising results in ameliorating joint pain and reducing inflammation that are associated with arthritis. Specific wavelengths of red light therapy from 600 nm to 700 nm have the ability to penetrate deeper into the joints and muscles, which promotes blood circulation, reduces pain, and improves mobility. Regular use of red light therapy may help manage arthritis symptoms effectively.
How often should I go to red light therapy sessions?
The frequency of red light therapy sessions can vary depending on the individual’s specific goals and the device being used. In general, it is recommended to start with a few sessions per week lasting from 10 minutes to 20 minutes each. You can adjust the frequency based on your progress and specific needs. That’s why it’s important to follow the recommended guidelines given in the manufacturing instructions and consult with your healthcare professionals.
Is near-infrared light therapy the same as laser therapy?
Near-infrared light therapy and laser therapy are both different modalities, although they both utilise light for therapeutic purposes. Near-infrared light therapy uses a broader spectrum of light within the near-infrared range than laser therapy, which uses highly focused and intense beams of light. Near-infrared light therapy is generally considered to be safer and more accessible for home use, while laser therapy is often used by professional dermatologists or doctors for specific medical treatments.
Are there any age restrictions for using red light therapy?
Red light therapy is generally safe for people of all ages. However, it is always recommended to consider individual circumstances and consult with healthcare professionals, especially when using red light therapy on young children.
A word from Healing Red Light.
Well, you just gained an in-depth understanding of the crucial role that wavelengths play in red light and near-infrared light therapy. By understanding the therapeutical applications of specific wavelengths, you are now equipped with valuable knowledge to make informed decisions regarding your red light therapy treatments.
Remember, this guide has provided you with a solid foundation. However, it’s worth noting that ongoing research and advancements in red light therapy are still in process. That’s why it’s highly important to consult with your medical doctors or healthcare professionals so you can embrace the power of red light therapy technology and discover the countless benefits it can give you.