Red Light Panels for Beginners: What They Are and How to Start

A red light panel is a flat board of LEDs that gives off red and near-infrared light at close range. People use one at home for short, regular sessions as part of a wellness routine. This guide explains what is inside a panel, what the numbers on the box mean and how to start without overdoing it.

What a red light panel is

The panel carries rows of LEDs, each made to give off a narrow band of light. A band is described by its wavelength in nanometres (nm). Two bands are common: about 660 nm, which is deep red and easy to see, and about 850 nm, which is near-infrared and close to invisible. Neither band is ultraviolet light.

Online, this kind of product is often searched for as red light therapy. The panel itself is a light source: you place it, switch it on and sit in front of it for a few minutes. It is a consumer wellness product, not a medical device.

What it is not

A red light panel does not diagnose, treat or cure anything, and this guide makes no promises about results. Research on light exposure is still developing and people respond differently. If you have a health condition, ask a qualified professional before you start.

The numbers on the box

Four figures do most of the work when you compare panels:

• Wavelength (nm): which bands the LEDs give off, for example 660 nm and 850 nm.
• LED count: how many LEDs the panel has, and how many of each band.
• Power (W): how much electricity the panel draws. It is not the amount of light.
• Irradiance (mW/cm²): how much light reaches a surface, which only means something together with the distance it was measured at.

Our guide to reading red light panel specifications goes through each one with a worked example.

How people start

A gentle start is the sensible approach, and the advice for MARS 400 is simple:

• Run a single automatic 10-minute cycle on each area.
• Start with a few sessions a week rather than every day.
• Stay at the distance the manual gives.
• Resist adding extra cycles just because the panel is simple to operate.

Our session set-up guide covers distance, timer, eye protection and the room.

Who should check first

Check with a qualified professional before using a panel if you are pregnant, photosensitive, take medication that makes you sensitive to light, or have a relevant medical condition. Always protect your eyes. Wear the protective glasses that come with the panel and do not look straight into the LEDs, including in near-infrared mode, where the light is hard to see.

Choosing a panel for a Hong Kong home

Space decides more than specifications in most Hong Kong flats. Measure the spot first: a desk, a shelf or a wall. Check that the panel can stand or be mounted where you will sit, that the cable reaches a socket and that the vents will not be blocked. Then compare the numbers on the box at the same distance.

Quick answers

Is a red light panel the same as a tanning bed?

No. The two bands in a panel such as MARS 400, 660 nm and 850 nm, are red and near-infrared light, not ultraviolet light. Tanning beds use ultraviolet light.

Do I need a dark room?

No. Room light does not change what the panel delivers. The session set-up guide explains why some people still prefer a dimmer room.

Can I use it every day?

The advice for MARS 400 is to start with a few sessions a week and to run one automatic cycle per area. If you are unsure how often to use a panel, ask a qualified professional.

Is MARS 400 a medical device?

No. MARS panels are meant for general wellness, skin-care and fitness routines. They are not medical devices, and they are not intended to diagnose, treat or cure any condition.

Where MARS 400 fits

MARS 400 is a compact panel for the face, neck and other smaller areas: 60 LEDs (30 red at 660 nm and 30 near-infrared at 850 nm), three modes, an automatic 10-minute timer, protective glasses in the box and a 3 year warranty. It measures 36 × 30 × 10 cm and weighs 2.6 kg. It is sold as a pre-order and shipped from China to Hong Kong, with free shipping.