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LED Light Therapy Benefits, Procedures, Red Light, Blue Light, Yellow Light

Updated: Sep 12, 2022

LED light therapy is a non-invasive, painless treatment. During treatment, you might feel some warmth but no discomfort.

Are there different kinds of LED light therapy?

LED light therapy uses various wavelengths that correspond to different visible colors. Each color penetrates the skin at different depths.

Blue light affects the uppermost layer of your skin.

Yellow light penetrates deeper.

Red light travels further into your skin.

Near-infrared light penetrates deepest.

Different LED colors do different things. For example, experts believe:

Red LED light therapy may reduce inflammation and stimulate the production of collagen, a protein responsible for younger-looking skin that diminishes with age.

Blue LED light therapy may destroy acne-causing bacteria (P. acnes).

During treatment, skin specialists may use a combination of lights to treat your specific issue.

Red light: Wave length: 620-700nm ( penetrates deepest)

  • anti aging

  • heal old scars

  • stimulate collagen and elastin production which are the building blocks of the skin.

  • reduces inflammation caused by blemishes, sun damage by accelerating the healing process thus improving skin tone and reducing wrinkles.

Yellow LED lights: Wave length: 590–560 nm (penetrates deeper than blue light)

  • triggers the lymphatic system to remove toxins from the exposed area.

  • increases blood circulation which improves wound healing

  • increases the skin’s ability to retain moisture, keeps the skin hydrated and amplifies your skincare regimen.

Blue LED lights: Wave length: 405nm to 420nm (affects the uppermost layer of your skin)

  • Anti-bacterial. This allows it kills off acne-causing bacteria and is most useful during the eruptive phase to address the problem at its source.

To get the best results for your skin it is best to use a combination of blue and red LEDs to get rapid results.

LED light therapy helps treat a variety of skin concerns and conditions, including:


Hair loss.

Mild to moderate acne.


Rough, scaly, precancerous spots on the skin (actinic keratosis).


Sun damage.



LED light therapy doesn’t help with:

Acne cysts.



LED light therapy might:

Treat acne.

Reduce fine lines.

Help with wound healing.

People with any skin type and color can use LED light therapy. LED light therapy doesn’t use ultraviolet (UV) light, so it doesn’t cause damage or burns to your skin.