We wanted our first device to deliver the most effective at-home rejuvenation treatment possible. We made a conscious decision to concentrate on the two most clinically proven wavelengths to promote skin health and support ageing (Red 633nm and Near-Infrared 830nm). In smaller devices, the more wavelengths you have, the more you need to drive the LEDs in order to deliver the required dose of light. This can result in pushing the wavelength too hard and missing the target. Our device has been created with best quality LEDs, delivering the correct wavelengths, at optimal intensities. The perfect ingredients for an effective treatment. We do absolutely LOVE Blue 415nm too though and offer this in-salon and hope to have a Blue 415nm device in the future. If you want to consider a mask that includes Blue, it’s important to know that only 415nm blue targets the bacteria that causes blemishes. Anything outside of that range ie 460, 480 etc - looks brilliant blue in colour but is not suitable for its intended use.When applying Blue 415nm to the face, unlike red and near-infrared light, eye protection is an absolute must.