Red LED light therapy: Revolution or just a passing trend?

In the ever-evolving world of beauty tools and appliances, red-light emitting devices, notably red light therapy wands, are becoming increasingly popular. Now a staple at favorite beauty retailers and a frequent feature of celebrity grooming routines, these devices are the center of attention. But beyond the excitement, does red light therapy really live up to its promise in terms of skin results, or is it just a passing fad?

What is Red Light Therapy?

Red light therapy, a form of LED therapyLight therapy exposes the skin to red or near-infrared wavelengths of light. Also known as low-level light therapy, this treatment operates in the 620 to 750 nanometer range of the electromagnetic spectrum, a low but effective energy for skin rejuvenation. This technology is particularly acclaimed for its ability to revitalize the skin.

A study published in 2017 attempts to answer this question!

Low-level light therapy (LLLT) using light-emitting diodes (LEDs) is considered beneficial for skin regeneration and anti-inflammation.

The aim of this study was to evaluate the efficacy and safety of two types of LLLTs using LEDs emitting red light at 660 nm and white LEDs emitting light from 411 to 777 nm in the treatment of facial wrinkles.

A prospective, randomized, double-blind, comparative clinical study involving 52 adult female subjects was carried out. The subjects' faces were irradiated daily with 5.17 J of red or white LEDs for 12 weeks.

In both groups treated with Red LEDs and white LEDs, wrinkle measurement from skin replicas improved significantly from baseline at week 12. The red LED group showed slightly better improvement, but there were no statistical differences. In blinded dermatologist assessments, no significant differences were observed between the two groups. In the subjects' overall assessment, the average improvement score of the red LED group was higher than that of the white LED group.

In conclusion, low-level light therapy using LEDs at 660 nm or 411-777 nm significantly improved periocular wrinkles. In particular, 660 nm LEDs could be an effective and tolerable treatment option for wrinkles.

Benefits of Red Light Therapy

Research into red light therapy has highlighted improvements in mitochondrial function and ATP production, essential for energizing cellular activities. These stimulated processes include collagen production, reinforcing skin structure and firmness, and helping to reduce fine lines and wrinkles.

The benefits of this therapy also extend to reducing inflammation and improving skin tone.

Risks associated with red light therapy

The risks associated with using red light therapy are considered minimal. Incorrect use, however, such as prolonged exposure or use of a damaged device, can result in burns or blisters. It is advisable to wear protective eyewear with red light therapy panels, or to avoid direct exposure of the eyes to light. Selecting a regulated device is crucial, given the lack of standardization in the field.

Red light therapy presents itself as a promising advance in skin care, offering a non-invasive solution for improving one's appearance. Despite some reservations about the consistency of devices available, choosing a product from a reliable source can offer a safe and effective experience. With its many proven benefits, red light therapy could well establish itself as a fixture in skincare routines.

Source:

Nam CH, Park BC, Kim MH, Choi EH, Hong SP. The Efficacy and Safety of 660 nm and 411 to 777 nm Light-Emitting Devices for Treating Wrinkles. Dermatol Surg. 2017 Mar;43(3):371-380. doi: 10.1097/DSS.0000000000000981. PMID: 28195844.

Avci P, Gupta A, Sadasivam M, et al. Low-level laser (light) therapy (LLLT) in skin: stimulating, healing, restoring. Semin Cutan Med Surg. 2013;32(1):41-52.