Column: LED light therapy promotes plump, younger looking skin | Your Health

We read and hear about it in the media and it is becoming increasingly popular in the skin care industry as well as in medical practices: medical-grade LED light therapy has been shown to improve natural skin and treat restless, acne-prone rashes.

The use of clinically effective LEDs – which use optimized doses of near-infrared, red, and blue light to enhance the body’s natural cell-healing response – is becoming increasingly commonplace in skin care clinics.

What is LED light? A light-emitting diode is a semiconductor component that converts electrical energy into light energy with the color of light

comes from the diode itself.

Like an ordinary light bulb, it is considered incoherent scattered light and does not generate any heat.

In the 1980s, NASA used LED lights to stimulate plant growth in space, and researchers unexpectedly discovered that LEDs promoted cell regeneration in plants, which then led to new applications of the technology in the beauty industry.

We humans can only see the colors that are correlated to wavelengths between 400 and 700 nanometers, which translates into blue, green, yellow and red. At the beginning of the light spectrum are the ultraviolet rays – UVA, UVB, UVC – with a range of approx. 200-400 nanometers and are therefore invisible to the human eye. A little bit of each is important, but excessive UV exposure has negative consequences, including skin cancer.

At the end of the spectrum are infrared rays from 700 to over 1,000 nanometers, which are also invisible, but we perceive them as heat. The longer the wavelength, the lower the frequency and thus deeper penetration into the skin.

LED effects on the skin

How does this LED detection work on the skin? Just as plants have chlorophyll to convert sunlight into chemical energy for growth, the skin has the ability to initiate a photochemical reaction and, at the appropriate wavelength and dose, lead to a biological effect.

As we age, the cells that make the skin supportive become slower. Environmental damage from UV rays speeds up this process, producing free radicals that damage the skin and cells that produce collagen and elastin.

The 633 nanometer red LED is a rejuvenating light that is absorbed in the cellular mitochondria, which generate most of the cell’s supply of adenosine triphosphate (ATP), which is subsequently used as a chemical energy source and stimulates ATP production, resulting in increased levels of ATP Cell vitality leads. It targets specific cells – fibroblasts – that are responsible for synthesizing and repairing the supporting structures of the skin, resulting in the softening of fine lines and improved skin tone.

In acne-prone skin, Propionibacterium is one of the main bacteria responsible for acne inflammation. These anaerobic bacteria thrive without oxygen and produce a light-sensitive substance called porphyrins. When a 415 nanometer blue LED is used, the porphyrins begin to produce oxygen intracellularly. This leads to the death of bacteria. In combination with the red LED with 633 nanometers, it reduces redness and inflammatory reactions and contributes to the positive effect of light therapy on acne.

Infrared light at 830 nanometers is strongly absorbed by fibromyocytes (muscle cells), thereby promoting the alignment and tone of the newly produced collagen. The skin feels firmer, fuller and more radiant as it is supplied with oxygen, blood supply and detoxification. A combination of infrared and red LED is a wonderful and relaxing anti-aging treatment to complement a facial peel or stand-alone skin rejuvenation protocol. Usually such light therapy is carried out in a series of eight treatments, two treatments per week for four weeks. The results are visible one to three months after the last light session.

LED light therapy is considered safe for most people, with the exception of those with a history of epilepsy. Certain medications, such as antibiotics and drugs for cancer and acne, can delay the start of treatment. Pregnant women can receive treatment on the face and other areas, avoiding the abdominal area.

Marjan Kashi, a Los Altos resident, is a licensed medical esthetician, electrologist, and founder of Pure Serenity Skincare, based in the Rancho Shopping Center. For more information, call 999-7873 or visit

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