Many shoppers start with the colour of an LED light device: red, amber, near-infrared. The colour is only a label. What a device actually emits is a set of wavelengths, measured in nanometres (nm), and every device we sell lists them on its product page.
What is an LED light device?
LED stands for light-emitting diode. Each diode emits light in a narrow band around one wavelength. A panel or wearable combines many diodes, often of several wavelengths, so the spec sheet lists more than one number. LEDs give off a little warmth but are not a heat source like a sauna, and the wavelengths our devices list (480–1060 nm) are outside the ultraviolet range.
Amber / yellow light – around 590 nm
Amber light sits between green and red in the visible spectrum. It is less studied than red or near-infrared and is usually included as one channel among several rather than on its own. Our 7-wavelength panels, such as the RL60S desktop panel and the RL120MAX, list 590 nm alongside red and near-infrared.
Blue light – around 415–480 nm
Blue LEDs are common in face devices sold elsewhere. Most of our range is red and near-infrared only. The exception is the RLPRO2000, whose listed spectrum starts at 480 nm. If blue light is what you are looking for, check the wavelength list before ordering, or ask us.
Red light – around 630–660 nm
Red is the light you can see glowing when a device is on. 630 nm and 660 nm are the most common red values on spec sheets, and 660 nm appears on most devices in our store, from panels to wearables such as the TLH150WP-A cap. Red and near-infrared light are the wavelengths most often discussed in research on light and skin appearance. That research is still developing, and results vary from person to person.
Near-infrared – around 810–1060 nm
Near-infrared is beyond what the eye can see, so a device can look dimmer than it is. Typical values are 810, 830, 850 and 940 nm; some higher-end panels go up to 1060 nm. Our wraps, belts and pads list 660 + 850 nm, while the 7- and 9-wavelength panels spread across more values.
How to compare devices
Look at three numbers together: the wavelengths, the number of LEDs, and the manufacturer's irradiance figure at a stated distance. Size matters too: a desktop panel suits a face-and-neck routine at a desk, while a full-length panel or a pad or blanket covers more area. Every TopBeautyBuy product page lists these figures as the manufacturer publishes them.
TopBeautyBuy devices are personal-care products for at-home beauty routines. They are not medical devices and are not intended to diagnose, treat, cure or prevent any disease. Individual results vary.
