Red light therapy has been studied extensively and one can conclude from the majority of studies that wavelengths within the 600nm and 800nm remain among the most popular.
In a well-known meta-analysis peer reviewed article co-authored by Dr. Hamblin goes on to say “is well accepted that red light (630 to 670 nm) or near-infrared light (780 to 940 nm) will have positive effects” meaning that these entire ranges are beneficial.
So the claim made by some of our competitors that only their specific wavelengths or combination of them are effective is not at all supported. In fact they often disparage the very lights they sell, as they offer several lines of products, some which feature the exact combination of wavelengths they dismiss as ineffective, furthermore - most of their positive reviews are from previous models that featured the "ineffective" wavelengths.
So before jumping on the trend bandwagon, it is important to see if that trend even makes sense!
Let's paint the whole picture:
Lately, some companies have come out with the claim that their spectral ouput is by far the best and that anything else is inferior and ineffective.
Let's examine this closely and we will find that this claim is fundamentally flawed as it misses the fact that LEDs by their very nature emit a whole range of wavelengths - always peaking at one - but include a very substantial percentage from neighboring wavelengths.
A CLOSER LOOK AT THE COMPETITOR’S CLAIMS:
When a competitor claims that their LEDs peak at various wavelengths on their panel, does this mean that they have a newly designed LED that can now peak at multiple wavelengths simultaneously? The answer is a resounding no. They have not invented anything new.
Why? Because by nature, each chip in an LED can only peak at one wavelength at a time.
So how are they adding all these amazing wavelengths that nobody else managed to?
Simple, they threw a very small number of LEDs into the mix that peak at these wavelengths - scattered randomly and on the panel.
What? This is the big secret cutting edge innovation? Simply put, yes.
As you may guess, this strategy flies in the face of best practices.
Why is this not an optimal way to deliver light therapy? In order to harness red light therapy benefits we have to shine the light directly onto the part of the body that we want to treat. In the thousands of studies conducted on red light, not a single study has observed the efficacy of distributing LEDs in such a manner. Although light therapy can benefit the body even when directed on another area that is meaningfully connected to the area being treated, the focus of the light onto a specific body part is always a very important consideration in the study design and is never left to chance.
One such panel has randomly scattered over its face:
2 LEDs producing 480 nm
5 LEDs dedicated to 810nm
5 LEDs producing 830nm
10 LEDs producing 630nm
Translation: Even if they do have any benefits, they are limited to very low doses in very small areas.
At Rouge, our panels are designed with the proven strategy of spacing red and NIR wavelengths closely side by side with the overlapping beam angle that delivers powerful and consistent blanket of combined light energy. Our strategy is backed by research and not trends.