*2.2.2. Action of blue light emitted by high brightness LEDs*

Blue light emitted by high brightness LEDs (in the range of 470nm wavelength) acts as a bactericide because its wavelength reaches the surface of the skin (epidermis) producing oxygen and generating oxidative stress destroying bacterias such as those that develop acne.

The action of blue light emitted by high-brightness LEDs is indicated for patients with inflammatory acne, as this therapy reduces bacterial growth and reduces inflammation. LED blue light therapy helps to kill the acne causing bacteria, reducing inflammation and providing a general rejuvenation effect on the skin. Blue light emitted by high brightness LEDs can be used to reduce cellulite and stretch marks and if combined with the red light the result will be more significant.

The action of light acts directly on the excessive production of fat by inhibiting excessive sebaceous secretion, oxygenation, aiding tissue regeneration, and stimulating the production of collagen and elastic fibers.

**Figure 2.** Arrangement of high brightness LEDs that emit blue light.

### *2.2.3. Action of green light emitted by high brightness LEDs*

Green light emitted by high brightness LEDs (in the range of 530nm wavelength) can be used in the improvement of skin metabolism, pigmentation, and effects of aging. It provides a control of melanin absorption, aids in whitening pigmentation spots and provides an overall effect of hydration. It also prevents the formation of stains, freckles, and helps to reduce them. It keeps the skin smooth and moisturized.

#### *2.2.4. Action of amber light emitted by high brightness LEDs*

The amber LEDs have a wavelength of 617nm. The irradiation of amber has both draining and detoxifying properties, improving blood and lymph circulation, reducing edema, stimulating

**Figure 3.** Arrangement of high brightness LEDs that emit green light.

*2.2.2. Action of blue light emitted by high brightness LEDs*

**Figure 2.** Arrangement of high brightness LEDs that emit blue light.

*2.2.3. Action of green light emitted by high brightness LEDs*

*2.2.4. Action of amber light emitted by high brightness LEDs*

It keeps the skin smooth and moisturized.

more significant.

234 Advances in Bioengineering

of collagen and elastic fibers.

Blue light emitted by high brightness LEDs (in the range of 470nm wavelength) acts as a bactericide because its wavelength reaches the surface of the skin (epidermis) producing oxygen and generating oxidative stress destroying bacterias such as those that develop acne.

The action of blue light emitted by high-brightness LEDs is indicated for patients with inflammatory acne, as this therapy reduces bacterial growth and reduces inflammation. LED blue light therapy helps to kill the acne causing bacteria, reducing inflammation and providing a general rejuvenation effect on the skin. Blue light emitted by high brightness LEDs can be used to reduce cellulite and stretch marks and if combined with the red light the result will be

The action of light acts directly on the excessive production of fat by inhibiting excessive sebaceous secretion, oxygenation, aiding tissue regeneration, and stimulating the production

Green light emitted by high brightness LEDs (in the range of 530nm wavelength) can be used in the improvement of skin metabolism, pigmentation, and effects of aging. It provides a control of melanin absorption, aids in whitening pigmentation spots and provides an overall effect of hydration. It also prevents the formation of stains, freckles, and helps to reduce them.

The amber LEDs have a wavelength of 617nm. The irradiation of amber has both draining and detoxifying properties, improving blood and lymph circulation, reducing edema, stimulating

the presence of water and causing a calming effect in case of redness caused by rosacea or sunburn.

For aging, the collagen fibers are presented densely packed together, to receive the amber light. The enzyme releases ions receivers which immediately adhere to the cytoplasmic membrane of the cells, creating a non-thermal thickening effect of collagen fibers. The reflection of light by the tissues in these conditions gives a healthy expression to patients. It has a draining action, stimulates blood and lymph circulation, and reduces swelling.

**Figure 4.** Arrangement of high brightness LEDs that emit amber light.
