Is LED beauty effective? The difference between home facial equipment and dermatological treatments.

When most people hear the word "LED", the first thing that comes to mind is probably lighting or light bulbs. LEDs are widely used in households due to their low power consumption and long lifespan, but they are also attracting attention in the field of beauty. Recently, LEDs have been used in cosmetic dermatology treatments, and home beauty equipment with LED functions is also available. So what kind of beauty effects can we expect? In this section, I will explain the effects of LED beauty and the difference between home facial tool and dermatological treatments.

What is LED?

LED is a light emitting diode (a semiconductor that shines), so named from the first letter of the word "Light Emitting Diode. LED bulbs are now widely used in homes.

LEDs have different wavelengths depending on the compounds used as materials. The length of the wavelength is expressed in units of nanometers (= one millionth of a millimeter) and affects the color of the light. In visible light (light that is visible to the eye), shorter wavelengths emit purple to blue light, while longer wavelengths emit orange to red light. This wavelength (color of light) has a great deal to do with the effect of beautiful skin.

The color of the light changes! What are the effects of LED treatment?

One of the main features of LED treatment is that the expected skin beautifying effects vary depending on the color of the light. As I told you, there are various types of LED colors, and since the depth of penetration of the skin differs depending on the color of the light, the effect also differs. In this section, we will introduce three colors that are often used especially in cosmetic dermatology. Let's compare their effects.

0 blue LED

It is mainly used for acne treatment. Acne (acne vulgaris) is caused by the excessive secretion of sebum and the growth of acne bacteria that live in the pores. Acne-causing bacteria produce a substance called porphyrin in the process of metabolism, and blue LED is an approach to this process.

When the blue LED reacts with porphyrin, reactive oxygen species are produced. This reactive oxygen species kills acne-causing bacteria, thereby improving or preventing the formation of acne. Blue LED also suppresses the secretion of sebum and tightens the pores.

0 Red LED

Red LED facial device reaches the dermis, which is deeper than the skin surface (epidermis). In the dermis, there are fibroblasts, which are the source of collagen and elastin. As a result, collagen increases, skin elasticity improves, and fine lines and pores become less noticeable. It also promotes blood circulation and improves dullness and dark circles, suppresses inflammation of acne and acne scars, and promotes the regeneration of the epidermis.

0 White LED

The white LED used in cosmetic dermatology has a long wavelength of 830 nanometers and can reach even deeper into the dermis. Like red LED, it activates fibroblasts in the dermis and regenerates the epidermis, and can also approach the muscle layer deep within the skin. It can also be used to activate the cells that make up muscles, making the muscle fibers (fibrous cells that make up muscles) thicker and improving wrinkles and sagging.

LED Healight II" used in cosmetic dermatology

The equipment used for LED treatment varies from clinic to clinic, but one that has been adopted by many clinics over the past few years is the LED Healight II.

The LED Healight II is equipped with 1,800 LED lights. In addition, it can continuously irradiate two types of LEDs with different wavelengths, 590 nanometers and 830 nanometers, to approach from the epidermis to the muscle layer. In particular, the following symptoms can be expected to improve.