Blue LED Light Therapy Benefits
- Jan 10, 2025
- 5 min read
Updated: Aug 2
Ida is a certified aesthetician (graduate of Marvel School of Beauty), offering home-based services since 1994. Ida provides various holistic services. She graduated from Zanqara’s Skin Care’s Dermatician course in 1994, which required her to understand homeopathic remedies.
Home LED devices are generally less intense and less accurate than those used in therapy. If you spend a lot of time looking at screens without protection, you might get digital eye strain or feel your eyes getting tired. Studies from organizations like the National Eye Institute show that children’s eyes absorb more visible light, making them more sensitive to prolonged screen time and eye strain. Blue light from devices can also cause your skin to produce more pigment as a natural defence, especially if you use screens often.
Getting blue light in the morning can help set your sleep schedule. But because blue light lowers melatonin, it’s a good idea to avoid screens right before bed. Most phones, TVs, computers, and tablets let you change the screen colour from blue to yellow to match your needs.
If you feel tired or down during the darker months, or get the "winter blues," you might find home light boxes helpful. These devices can also help shift workers and people who spend a lot of time indoors by improving mood, alertness, and focus.
To protect your eyes from daily screen use, eat foods rich in antioxidants, such as lutein and zeaxanthin. You can find these in colourful foods such as squash, kale, spinach, corn, peas, carrots, and egg yolks. Omega-3 fatty acids from good fish oils also help.
Blue light therapy uses short wavelengths and high energy for different wellness benefits. It can be delivered through LED, low-level laser, photodynamic therapy, IPL, or laser devices, each with its own strength. Eye protection is important during treatments because the therapy uses specific blue light wavelengths (415-470 nm) to safely reach the skin and improve its appearance and function.
Pigmentation lightening and hyperpigmentation of Blue Light Therapy
Blue light therapy can help even out your skin tone after breakouts by reducing redness and calming inflammation. It works indirectly on pigment cells and may lower pigment production in the treated area, depending on how it’s used and your skin’s condition. When used as directed for cosmetic reasons, the risk of unwanted light or dark spots is very low.
Blemish control in skincare
Blue light therapy can also help reduce enlarged oil glands. It’s used in facial steamers, LED devices, and other light treatments to target the bacteria on your skin that cause breakouts. Blue light’s antimicrobial effects help protect against certain bacteria, especially those sensitive to light and associated with blemishes. Some people respond more than others when it comes to managing pimples, possibly due to different personal or environmental factors. It can also help calm chronic skin issues like itchiness, flakiness, or dryness, and may improve the look of sun-damaged skin and minor acne scars.
Blue Intense Pulsed Light M22 is very effective at removing skin mites from the face and around the eyes. It also helps calm irritation, reduce redness, and clear up surface blemishes.
Dental aid
In oral care, certain blue light wavelengths are often used with teeth-whitening gels to speed up the removal of surface stains. Blue light also targets bacteria that cause plaque, so it’s a helpful addition to brushing and flossing. Dentists use special curing lights to harden resin fillings. Use your oral device after brushing. Some medical procedures use light to remove unwanted age spots or sun spots, but these must be done only by a qualified doctor.
Evolving antimicrobial and disinfection Research
As more bacteria become resistant to antibiotics, researchers are studying how blue light therapy affects different bacteria, moulds, and yeasts in lab tests. These studies suggest blue light could help disinfect surfaces, depending on the situation.
Microorganisms seem less able to develop resistance to blue light than to traditional antimicrobials, since blue light affects many parts of them at once. How well it disinfects depends on each strain’s sensitivity to light. Most research is still in early stages and uses lab models, so these results are not yet meant for home wellness use. Blue light may also support local cellular energy, provide temporary relief from minor muscle and joint discomfort, and help the skin recover naturally.
Hair growth or hair loss?
Blue light therapy may help people with thinning hair by supporting hair growth and thickness. It can reduce bacteria or yeast on the scalp that might slow growth, and it also helps calm surface inflammation and improve cell health, making it a useful option for hair regrowth.
Combining blue light with red and near-infrared (NIR) light in low-level laser therapy devices results in better hair regrowth than using blue light alone.
Some high-energy hair removal devices use certain types of light to permanently damage hair follicles. Whether a device helps hair grow or removes it depends on its design and how it’s used. People with blood clotting problems may find these devices safer than razors. Because everyone’s health is different, it’s best to talk to a dermatologist or hair specialist to see if these devices are right for you.
Topical and internal sun protection
Most sunscreens don’t protect against blue light because they are designed to block UV rays, which we can’t see. Blue light is part of the visible spectrum, right next to UV. Sunscreens with at least 3% iron oxide offer much better protection against visible light and UVA.
Contraindications
Be careful when using blue light therapy. Always wear the right protective eyewear for the type of light you’re using. Too much blue light can cause unwanted effects. After treatment, avoid bright sunlight and any medications that make you sensitive to light, but regular indoor lights are fine.
LED light therapy is not safe for people with epilepsy or for those who have conditions that make them sensitive to light, since it can cause bad reactions or skin problems. These conditions include:
Porphyria (a blood disorder causing light sensitivity)
Lupus
Vitiligo (a skin condition that reduces the skin’s protective pigment, making it highly sensitive to sun and light exposure)
Acute Skin Irritation (irritable, flaky, itchy, or painful skin conditions in their active stages)
Be cautious if you use any products that make your skin more sensitive to light when doing light therapy.
Conclusion
Both blue light therapy and electronic screens use blue light, but therapy devices are designed for specific cosmetic or health purposes, while screens just emit light and can affect your sleep and eyes. The main differences are in eye protection, wavelength, strength, and purpose. Always use light devices as recommended by the manufacturer.
A note on Clinical vs. Cosmetic practice
As an aesthetician, I offer only cosmetic treatments, such as skin brightening and smoothing. LED light is also used in medicine, but only trained professionals should do medical treatments. I don’t provide medical light therapy for chronic conditions, but I enjoy sharing how this technology is used in both medical and beauty fields.
Visit my website for more info!
Ida Fanelli, Aesthetician, Reflexologist & IPL & Dolphin MPS Technician
Ida is a dedicated wellness professional and certified aesthetician (Marvel School of Beauty), providing personalized, home-based services since 1994. A certified reflexologist since 1993 (D'Arcy Lane Institute), she has integrated energy therapies and Ion Cleanse foot wellness sessions since 1998. In 2012, she became a certified Sharplight IPL Technician for skin rejuvenation and pigmentation correction, and in 2019 earned a specialized certification from the Center for Pain and Stress Research, using the Dolphin Neurostim system for Microcurrent Point Stimulation to support scar tissue release, skin rejuvenation, and pigmentation lightening. Ida is deeply committed to continuing education in complementary health to provide accessible, high-quality care. She also brings 12 years of experience as a hospital laboratory technologist in Microbiology and Biochemistry to her meticulous practice.
Disclaimer: This information is shared exclusively for educational and cosmetic informational
purposes. For any chronic, underlying, or severe medical concerns, always consult an accredited
healthcare professional.
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