If you're still on the fence about whether red light therapy works, the research from 2025 might shift your view. Several clinical trials—on humans—have now shown measurable benefits for everyday issues like sleep, pain, hair loss, gum sensitivity, hormone imbalances, and skin health.

This isn’t just lab talk. These are real people, with real results - let's take a look at just a few of these papers. I will attach the links so you can see for yourself.

1. Hair Regrowth Confirmed—Again: 650 nm Still Leads

A recent clinical study compared three wavelengths: 650 nm (red), 1550 nm, and 14,000 nm (far-infrared). All groups saw some regrowth—but 650 nm came out on top. Average increase was 14 hairs per cm². The control group lost hair.

Why it matters: If you're starting to lose hair, devices with 650 nm red light (like caps or panels) are a practical, non-pharmaceutical tool. They might be harder to find so opt for devices with LEDs in the 660nm range. There are also reasons to be optimistic for scalp health and brain health as research continues to demonstrate not just surface level hair regrowth, but deeper tissue brain improvements with light.

View hair growth study on PubMed

Learn more about our red light hair growth devices.

2. Tooth Sensitivity? Red Light Reduced Pain

A randomized study on dental patients showed that 660 nm red light significantly reduced pain and sensitivity after deep cleaning and scaling. Within 30 days, subjects had less sensitivity to cold drinks and brushing. So if you are someone that suffers from sensitive teeth, simply popping in red light therapy device may prevent the need for time consuming and costly visits.

View dental study on PubMed

Explore our oral health red light devices.

3. Diabetic Foot Pain: Relief in 10 Days

In this Chinese clinical trial, patients with diabetic neuropathy received 632.8 nm red light to their feet. After 10 days, they had lower pain, improved sensitivity, and reduced levels of a nerve damage marker in the blood. Using a wrap or torch in this instance might be a suitable, non-invasive option to trial at home to see if it can help you or a family member.

Expert insight: This is mitochondria-mediated change—exactly what photobiomodulation targets.

View diabetic neuropathy study on PubMed

4. Chronic Vulvar Pain: Red Light Helped

A very specific, but nonetheless, important research paper for females. A randomized trial on women with provoked vestibulodynia (chronic pain at the vaginal entrance) found increased pain threshold and reduced tampon pain after red light therapy. The control group saw no improvement. You could use wand for more internal light or a wrap to help achieve the results obtained in the previous study.

Why it matters: For women dealing with persistent pelvic pain, red/NIR wraps may offer a non-invasive option.

View vulvar pain study on PubMed

Check out our red light therapy wand.

5. Pressure Sores: Blue Light Improved Healing

Blue light (400–450 nm) was applied to stage 2–3 pressure ulcers in a new study. Healing was significantly faster than in the control group. While not the mainstay of red light therapy, short wavelengths have emerging use cases for surface wounds. I know I have used it in very short blasts to create a short oxidative stress burst. I often use it in conjunction with red and near infrared light (as would be found in nature) by using the torch.

View pressure sore study on PubMed

6. Nasal Congestion from Allergies: Better Breathing

A study using red and near-infrared intranasal light found reduced allergy symptoms and nasal blockage. Participants had improved airflow and better symptom scores.

Bonus: Intranasal light doesn’t just affect the mucosa—it influences blood flow, nitric oxide, and immune signaling. Using intranasal light has also been shown to influence brain function in a positive manner. Using the torch with 810nm as well a high bioavailable red light might give you best of all worlds.

View nasal congestion study on PubMed

Discover our intranasal light therapy devices.

7. Depression Trial: Better Sleep, Not Just Mood

A new tPBM (transcranial red light) trial on patients with major depressive disorder showed that while mood improvement was seen in both placebo and treatment groups, only the light-treated group showed deeper and more restorative sleep.

Expert perspective: Photobiomodulation works beyond mood—it changes circadian timing, brain energy, and neuroelectric rhythms.

View depression study on PubMed

Learn about transcranial photobiomodulation.

8. Age-Related Vision Loss: Slowed or Reversed

The LIGHTSITE III study followed patients with dry AMD. Those receiving red and NIR therapy maintained or improved vision and had a 73% reduced risk of progressing to geographic atrophy (permanent vision loss).

Takeaway: Light therapy may not just delay disease—it can restore function. When selecting a light for this use case, opt for a battery powered (DC current) low flicker alternative light a torch or travelmate.

View article in Retinal Physician

So, What Does This Mean for You?

These aren’t abstract results.  These are real world achievable results for you, me and everyone you know if you are consistent. If you would like to know some products that might be suitable, I have linked to some below:

• Gum health
• Foot pain
• Vulvar sensitivity
• Sleep quality
• Allergy relief
• Skin regeneration
• Visual function

These are the same issues our Norwegian customers bring up—especially during winter and the darker months when energy, sleep, and skin take a hit.

Which Devices Deliver These Wavelengths?

Home Light Therapy is Norway's oldest and most experienced bespoke red light therapy brand since 2018. I offer panels, handhelds, wraps, and headgear using the same clinically validated wavelengths. I am also the only company independently measuring each and every unit before sending them out to customers. This insures wavelength and irradiance is correctly measure and optimises the chances of successful results. So what wavelengths can you expect across my range:

• 630–660 nm (broadest support for red light therapy benefits)
• 850–1060 nm (deeper tissue, sleep, mood)
• 400–450 nm (skin, wounds, sinuses, bacteria)

You’ll find these across our Half Body Max panels and other red light therapy devices in our catalog. Use code "research2025" for 15% half body panels until June 5th.

Not sure what suits your case? Get in touch—we’ll help you match the right light to the right concern.