While many red light therapy companies cut corners to make their devices cheaper, the truth is that these devices will not get the same results as is seen in the clinical studies. The quality of a light therapy device is based on four main variables: Irradiance: This is a measure of the intensity coming from the light. A reputable company should give you these measurements at varying distances. If they don’t, chances are they’re hiding something. Wavelength: The wavelength relates to the specific color of light emitted. Not all colors of red or near-infrared give you benefits, so it's important that all the wavelengths from a red light therapy device fall between 600-700nm (red) and 800-900nm (near-infrared). nnEMF: Also known as non-native electromagnetic frequencies, these are the fields of radiation surrounding a man-made object. A high power device, such as those in the MyLight range, allows you to be further away from the device, protecting you from EMFs. Flicker: Flicker in light is the rapid, repeated change in brightness that comes from a change in voltage. Flicker may be associated with headaches and eye strain. House wiring uses alternating current (AC), which produces flicker. Our devices contain a driver to convert the AC to direct current (DC), thereby blocking any harmful flicker.