850 nm Near-Infrared Face Masks: What Does 850 nm Mean?

850 nm is a near-infrared wavelength commonly used alongside visible red light in LED wellness devices. The number 850 describes the wavelength in nanometres. Because 850 nm sits beyond the visible red portion of the spectrum, you generally cannot see the near-infrared light itself.

What does 850 nm mean?

A nanometre, abbreviated nm, is a unit used to describe wavelength. Visible colours occupy different wavelength ranges, while near-infrared begins beyond visible red. A device labelled 850 nm is therefore describing a specific near-infrared wavelength, not simply saying that it uses “infrared” in a general sense.

Can you see 850 nm near-infrared light?

Near-infrared light at 850 nm is generally invisible to the human eye. Depending on the device design, you may see neighbouring visible LEDs operating at the same time, but visible brightness is not a reliable way to judge whether an 850 nm LED is active. Follow the device indicators and instructions rather than judging output by eye.

Is 850 nm the same as red light?

No. Red light and 850 nm near-infrared light are different wavelengths. Red light is visible, while 850 nm near-infrared is outside the visible range. Some facial devices combine both within the same session or provide modes that use different combinations.

What matters besides wavelength?

Wavelength is only one part of a light-based device specification. When comparing an LED face mask, also consider:

• Irradiance or power density, commonly stated in mW/cm².
• Session duration and the manufacturer’s usage guidance.
• Coverage across the intended facial area.
• Fit and comfort, because consistency depends on a routine you can actually maintain.
• Mode design if several wavelengths are included.
• Safety guidance, particularly around photosensitivity and relevant contraindications.

How does GloWave use 850 nm near-infrared?

GloWave™ LED + PEMF Facial Mask includes 850 nm near-infrared alongside 630 nm red, 590 nm yellow and 465 nm blue light. Its Calm, Restore and Total modes include 850 nm near-infrared as part of their wavelength combinations.

GloWave uses 100 four-chip LEDs and has a stated irradiance of 30 ± 5 mW/cm². It also incorporates four PEMF coils, making it a multi-technology facial wellness system rather than an 850 nm-only mask.

Should you choose an LED mask based only on 850 nm?

No. A named wavelength is useful because it makes the specification more transparent, but it does not tell you everything about the device. Compare output, coverage, session guidance, controls, fit, safety information and warranty alongside the wavelengths used.

Read Red Light vs Near-Infrared Light, LED Face Mask Colours Explained, or our UK LED face mask buying guide next.

This article is for general educational information and is not medical advice. Always follow the instructions supplied with your device.