A. The role of red light (630-700nm)
1. Mechanism of action
Promote cell metabolism: red light can be absorbed by the skin surface (dermis), enhance mitochondrial activity, promote ATP (cell energy) production, and accelerate cell repair and regeneration.
Anti-inflammatory and collagen synthesis: stimulate fibroblast proliferation, increase collagen and elastin production, improve skin elasticity, and reduce inflammatory response.
2. Main applications
Skin repair:
Acne treatment: inhibit Propionibacterium acnes and reduce inflammatory acne.
Wound healing: accelerate postoperative wound, burn and chronic ulcer repair (such as diabetic foot).
Anti-aging: fade fine lines and brighten skin tone (long-term use is required).
Hair loss treatment: activate hair follicle stem cells and improve androgenic alopecia (need to cooperate with drugs).
Pain relief: reduce mild inflammatory pain in joints or muscles (such as arthritis, tendonitis).
3. Typical equipment
Home beauty devices: LED masks, handheld red light devices (power 5-50mW/cm²).
Medical equipment: high-power red light therapy devices (doctor's guidance required).
B. The role of infrared light (above 700nm)
1. Mechanism of action
Deep thermal effect: infrared (especially near infrared 800-1400nm) can penetrate into the subcutaneous tissue (depth up to 5-10cm), promote blood circulation and relax muscles through thermal effect.
Analgesia and anti-inflammatory: inhibit the release of inflammatory factors such as prostaglandins, and relieve chronic pain.
2. Main applications
Musculoskeletal rehabilitation:
Arthritis: relieve pain and stiffness of rheumatoid arthritis and osteoarthritis.
Sports injuries: accelerate the recovery of muscle strains and ligament sprains, and reduce lactic acid accumulation.
Chronic pain management: low back pain, neck and shoulder pain (need to be combined with physical therapy).
Metabolic regulation: assist in improving blood circulation disorders (such as diabetic neuropathy).
3. Typical equipment
Near infrared lamp: used for home therapy (wavelength 800-1000nm, moderate power).
Far infrared sauna cabin: whole body heat therapy detoxification (wavelength 5-15μm, temperature control required).
V. Precautions
Frequency and time of use:
Red light: 3-5 times a week, 10-20 minutes per time (beauty) or 30 minutes (medical treatment).
Infrared: once a day, 15-30 minutes per time (avoid overheating).
Contraindications:
Patients with photosensitive diseases (such as lupus erythematosus) and skin cancer are prohibited.
Pregnant women and those with metal implants (such as heart stents) should use infrared with caution.
Safety protection:
Wear goggles to avoid eye damage.
Drink more water before and after infrared treatment to prevent dehydration.
VI. Scientific selection suggestions
Beauty needs (freckle removal, anti-aging): low-power red light equipment (630-660nm) is preferred.
Chronic pain or sports rehabilitation: choose near-infrared devices (800-1000nm) with thermal adjustment function.
Medical-grade treatment: Use high-power equipment under the guidance of a doctor and avoid self-operation.
Red light and infrared light therapy lamps improve skin health and relieve pain through different mechanisms, but the wavelength and intensity should be selected according to specific needs and strictly follow safety regulations. you can find red and infrared therapy led light on https://www.benweilight.com/red-light-therapy/theraphy-light-660nm-850nm-relieve-pain-and.html
