What are red and blue light therapies and how do they benefit skin?

In recent years, advancements in skincare technology have introduced innovative methods to combat the signs of aging. Among these, light-emitting diode (LED) therapy has gained popularity for its non-invasive and effective approach. Specifically, red and blue LED lights have emerged as promising tools in the quest for youthful skin.

Red LED Light and Skin Rejuvenation:

Red LED light, with a wavelength typically ranging from 620 to 750 nanometers, penetrates the skin’s dermal layers, stimulating cellular activity. This light therapy is believed to enhance collagen production, a key structural protein of the skin which along with other proteins helps in keeping the skin firm and taut free of wrinkles. As we age the amount of collagen produced in the skin decreases leading to the forming of wrinkles and fine lines and a cascade of other effects at the cellular level. By promoting collagen synthesis, red LED light aids in reducing the appearance of wrinkles and promoting a more youthful complexion.

Furthermore, red LED light has been associated with increased blood circulation. Improved blood flow means better delivery of nutrients and oxygen to skin cells, facilitating their regeneration and overall skin rejuvenation. Studies have shown that consistent use of red LED light therapy can contribute to a more even skin tone and texture.

Blue LED Light and Acne Treatment:

On the other end of the spectrum, blue LED light with a wavelength between 405 and 420 nanometers has demonstrated efficacy in treating acne. This specific wavelength is effective in targeting the bacteria responsible for acne breakouts—Propionibacterium acnes. Blue LED light penetrates the sebaceous glands, where these bacteria thrive, and triggers the release of reactive oxygen species, ultimately destroying the bacteria.

In addition to its antibacterial properties, blue LED light has been shown to regulate sebum production. Excess sebum can contribute to the development of acne, and by controlling its production, blue LED light provides an additional layer of defense against breakouts. This dual-action approach makes blue LED light a valuable tool in the management of acne-prone skin.

Combining Red and Blue LED Light Therapy:

Some skincare devices and treatments harness the benefits of both red and blue LED light therapy. This combination is particularly effective for addressing multiple aspects of skin health. For example, devices with adjustable settings allow users to switch between red and blue light to target specific concerns. This dual therapy can be especially beneficial for individuals dealing with both aging and acne-related skin issues.

A natural way to get Red and Blue LED light therapy:

Solar rays have both red and light rays in the spectrum. Just getting exposed to natural sunlight for 15 in the morning at sunrise and for 15 minutes at sunset gives skin the optimal benefits of the rays. 

Conclusion:

As the field of skincare continues to evolve, the integration of red and blue LED light therapy stands out as a promising avenue for addressing skin aging and acne concerns. These non-invasive and convenient treatments offer an alternative to more traditional methods, providing individuals with an effective means of achieving and maintaining youthful, radiant skin. However, it’s essential to note that while LED therapy can be a valuable addition to a skincare routine, results may vary. Also, it is extremely important to use the right wavelength, the right amount of exposure which if not leads to damaging the skin.

A natural way to get Red and Blue LED light therapy:

Solar rays have both red and light rays in the spectrum.    Just getting exposed to natural sunlight for 15 in the morning at sunrise and for 15 minutes at sunset gives skin the optimal benefits of the rays.

References:

  1. Low-level red plus near infrared lights combination induces expressions of collagen and elastin in human skin in vitro. Int J Cosmet Sci 2021 Jun;43(3):311-320. doi: 10.1111/ics.12698
  2. Highlighting nuances of blue light phototherapy: Mechanisms and safety considerations. J Biophotonics 2023 Feb;16(2):e202200257. doi: 10.1002/jbio.202200257. Epub 2022 Oct 25
  3. Experimental Study on Blue Light Interaction with Human Keloid-Derived Fibroblasts. Biomedicines. 2020 Dec 6;8(12):573. doi: 10.3390/biomedicines8120573.
  4. Blue-Light Therapy for Acne Vulgaris: A Systematic Review and Meta-Analysis. Ann Fam Med 2019 Nov;17(6):545-553. doi: 10.1370/afm.2445.
  5. Blue and red light combination LED phototherapy for acne vulgaris in patients with skin phototype IV. Lasers Surg Med 2007 Feb;39(2):180-8. doi: 10.1002/lsm.20412.
  6. Effects of visible light on mechanisms of skin photoaging. Photodermatol Photoimmunol Photomed. 2022 May;38(3):191-196.