What Are The Functions Of Different Colors Of Light In LED Phototherapy?

Article source: https://www.litonlaser.com/functions-of-different-color-lights-of-led-phototherapy-machine/

1. Overview of LED PDT phototherapy beauty machine technology.

The basic principle of LED phototherapy PDT beauty machine is based on the living cells of organisms, which absorb light energy of specific wavelengths, and under the influence of light energy, increase reactive oxygen, activate mitochondrial reactions, produce adenosine triphosphate (ATP), stimulate fibroblast proliferation and secretion, promote lymphatic circulation, and produce biological reactions such as anti-inflammation, skin repair, and regeneration. Low-energy phototherapy can be equivalent to the "photosynthesis" of plants. This is a physiological reaction at the cellular and molecular level, which is called photomodulation biological action.

PDT skin rejuvenation is also called photodynamic skin rejuvenation or photodynamic therapy, collectively referred to as LED phototherapy. Under normal circumstances, LED phototherapy beauty machines will carry different colors of light, and each light reaches a different depth of the skin, so it has different functions and plays a different role in the beauty industry.

2. The main influencing factors of LED photodynamic therapy equipment.2.1 Wavelength (color of light).

Different wavelengths correspond to different biological photomodulation reactions and results. Only reasonable wavelengths can be absorbed by the corresponding target color base to produce effects. In LED photodynamic therapy, wavelength is the most important treatment parameter.

2.2 Irradiation intensity (energy or power density).

Sufficient energy can stimulate the target organ to produce effects. Too low light energy has basically no therapeutic effect, so many beauty salons that choose home LED therapeutic devices say that the effect is not good, that is because the energy is too low.

2.3 The location depth and wavelength of the target tissue.

In a certain range, the shorter the wavelength (close to purple light), the shallower the penetration depth, and the more obvious the photochemical effect on the skin; the longer the wavelength (red light, near-infrared light), the deeper the penetration depth of the skin, achieving specific effects such as stimulating blood vessels, stem cell proliferation, collagen fiber regeneration, etc.

2.4 Effects on surrounding tissue cells.

After being illuminated by LED light, cells will release some biological signals, which will be transmitted to deeper dermal tissues to regulate cell functions, promote cell proliferation, and repair damaged cells.

3. Common color wavelengths and functions of LED photodynamic machines.3.1 Red light: repair, anti-inflammatory, anti-aging, hair growth.

• Red light (635-700nm, commonly used to 650nm), with a penetration depth of about 5-8mm, stimulates blood circulation, reduces inflammation, promotes wound healing, and promotes hair regeneration.
• After visible light to near-infrared LED light penetrates the epidermis of the skin and reaches the dermis of the skin, it promotes the regeneration and rearrangement of elastic fibers and collagen fibers through photothermal and photochemical effects, thereby reducing skin wrinkles, increasing elasticity, uniform pigmentation, skin rejuvenation and mild wrinkle removal.
• 635nm LED light can inhibit the release of inflammatory mediators – prostaglandin E2 (PGE2) by gingival fibroblasts, thereby reducing the inflammatory response of the gums. Red light has a certain analgesic effect and can be used for anti-inflammatory and repair after laser treatment.
• Red light between 630-670nm can promote hair follicle proliferation, delay the transition of the hair cycle from the growth phase to the regression phase, promote hair regeneration, and prevent continued hair loss.

3.2 Blue light: Treat acne and kill bacteria.

1. Blue light can treat acne and has bactericidal and anti-inflammatory effects. Its skin penetration depth is the shallowest. The spectrum of blue light is very consistent with the maximum absorption peak of Propionibacterium acnes (Propionibacterium acnes itself can produce endogenous porphyrins, the main components of which are coproporphyrin and protoporphyrin IX).
2. Using it to irradiate Propionibacterium acnes will cause photoexcitation of endogenous porphyrins in cells, produce singlet oxygen, and achieve a bactericidal effect: Propionibacterium acnes is an anaerobic bacterium. At the same time, blue light can change the intracellular pH value by inducing membrane permeation and inhibit the proliferation of Propionibacterium acnes.
3. The light source range for treating acne is generally within the range of 420-480nm. The blue light wavelength commonly used by yellow people is recommended to be 450-470nm, which is not easy to cause pigmentation and skin burns, and the deeper the penetration depth, the more significant the effect.
4. In the process of irradiating blue light to treat acne, attention should be paid to moisturizing and anti-oxidation. The time should not be too long. After treatment, sun protection must be used to avoid the problem of "acne is cured, but the face is darkened".

3.3 Yellow-orange light: enhance immunity and desensitization, and have a convergence on vascular dilation

• 570-600nm yellow-orange light, the deeper the skin penetration depth is 2mm or deeper, it can stimulate collagen regeneration and whiten the skin.
• Yellow-orange light irradiation can enhance immune function, reduce inflammation, calm, soothe sensitive skin and contraction, treat fine red blood streaks, rosacea; yellow light can also help promote skin repair after laser treatment, hormone-induced dermatitis, etc.
• It can also promote collagen synthesis, treat capillary dilation and balance the overall skin texture, and mildly anti-aging. 580nm is the most commonly used wavelength, which can enhance repair and desensitization after laser surgery.

3.4 Green light: evens out skin tone, inhibits pigmentation, and relieves sensitivity

• The wavelength is around 510-550nm. According to research, it can effectively stimulate mitochondria in cells and produce a series of effects such as stimulating cell activity, regeneration, repair, and anti-inflammatory.
• Green light can slowly shrink dilated capillaries, has a slight anti-inflammatory effect, and can promote the body to produce serotonin, which is a quiet, euphoric hormone that relaxes and soothes people, slowly lowers blood pressure, and relieves certain neuropathic pain, such as migraine.
• It also has the effect of gradually brightening the skin tone, which can help fade dark circles, and is more suitable for people with light skin. Dark skin types above type III can use orange LEDs with longer wavelengths.

3.5 Near infrared light.

• Near infrared light (wavelength 800-900nm, some can reach 1200nm), with a penetration depth of about 10-20mm, can effectively fight inflammation, relieve pain, stimulate collagen proliferation and ATP production, so it can promote the growth of epithelial cells after trauma, promote the healing of wounds such as burns and scalds, and promote the repair of eczema dermatitis.
• Near infrared light has been used to stimulate stem cell proliferation and differentiation. It can promote microcirculation and has a good therapeutic effect on the healing of chronic ulcers of the lower limbs for diabetic patients.
• Equipment in the range of 580-850 has a certain effect on skin collagen stimulation growth, skin rejuvenation and pore shrinkage. This LED irradiation can make muscle and skin cells grow at 3-5 times the normal speed.

4. More information on LEDPDT phototherapy machines.4.1 5-color LED phototherapy device and 7-color LED phototherapy machine.

In addition to the five-color LED phototherapy equipment of red, blue, green, yellow, and near-infrared light mentioned above, LITONLASER also has purple and orange light as supplementary light sources, which is the 7-color LED phototherapy device that is popular recently.

We now know that different colors of light have different functions. For PDT equipment, power is also an important factor, and what affects the power or energy of the machine is the power and radiation intensity of each lamp bead of the LED phototherapy instrument. As an old manufacturer with 20 years of experience, LITONLASER has fully studied LED machines. Our radiation intensity and the power of each lamp bead are the top in the industry. A machine has enough energy and the energy is sufficient and stable, so that it can bring obvious treatment effects!

4.2 Photoelectric beauty projects of LED photodynamic equipment combined with other machines.

In addition to being able to improve skin when used alone, LED phototherapy equipment is usually combined with other beauty machines to carry out photoelectric beauty projects, such as 560nm handle IPL beauty machine + blue light LED phototherapy for acne removal and skin rejuvenation projects; 1927nm fractional thulium laser + 650nm red light LED phototherapy machine for hair regeneration and hair loss prevention projects; CO2 fractional laser + red light LED photodynamic for scar removal and skin healing promotion projects, etc.

In fact, many machines can be used with PDT for project cooperation. If you want to know more about photoelectric projects and specific treatment details, or are interested in the machine, you can contact our website at any time: https://www.litonlaser.com/.

Offering Ipl hair removal and skin rejuvenation series, Q-switch Nd: Yag laser series, CO2 laser series, RF skin lifting series, slimming series,1927nm Thulium laser.