Frequently Asked Questions

FAQs: Polychromatic Light Therapy

Here are the answers to some of the most common questions about light therapy and InLight Medical systems, from light users just like you.

Q: What is light therapy?

A: Low-level light therapy (LLLT) stimulates the process called photobiomodulation (PBM).  In scientific studies, PBM has been shown to trigger the release of nitric oxide. Nitric oxide causes local vasodilatation which causes an increase in local circulation which brings increased healing oxygen and glucose to tissue.  In addition, nitric oxide triggers the nucleus of the cell to manufacture various healing substances which support cellular processes and health. Several of the healing substances shown in scientific studies to be triggered by nitric oxide include:

  • Certain opiod-like and anti-inflammatory substances which reduce pain
  • Angiogenic factors which further increase local circulation and reduce swelling
  • Synaptogenic factors in brain to increase brain cell communication and clarity
  • Various growth factors which improve cell activity and prevent natural cell death

Q: What is the difference between red, blue and infrared light?

A: Yes, its easy-to-use controls feature automatic and manual controller settings, flexible pads with unlimited positioning and velcro style straps to secure the pads to the area of application.

Just as light is necessary in photosynthesis for plants to live, our cells need light as well. The body will absorb the polychromatic light therapy as each wavelength penetrates to a different level.  Each of the InLight Medical pads have at two to three wavelengths, so the cells remain reactive to light therapy.

  • Blue & Infrared Light: Increases circulation and contains antimicrobial properties. It can be a beneficial element for skin care regimens and addressing painful skin conditions.
  • Red & Infrared Light: Triggers an increase in circulation. Reaches the cells of deeper tissues in muscles, tendons, ligaments and the brain.
  • Various combinations of these three lights create the InLight Medical low-level polychromatic light therapy system.

Q: What is ‘polychromatic’ light therapy?

A: Polychromatic light therapy is the simultaneous use of more than one light wavelength, or color. InLight Medical Systems™ use two or more light wavelengths in every pad.

Q: What is Progressive Multi-Pulse™ technology & how is it different from other systems?

A: InLight systems automatically pulse light through seven different frequencies during each 20-minute session when placed on setting A, B or C. The exact frequencies vary from setting to setting. Scientific  studies suggest that pulsed light is more effective than light which is applied continuously.

Q: What has light therapy been shown to do?

A: INCREASE CIRCULATION:  Circulation is increased by the release of nitric oxide which causes both local vasodilatation and the formation of new capillaries.  New capillaries and vasodilatation support the body’s natural healing processes by carrying more oxygen and glucose to the tissue.

REDUCE PAIN:  LLLT has been shown in scientific studies to release nitric oxide which causes local vasodilatation which improves the oxygenation of ischemic tissue to reduce pain.  It also triggers the nucleus of the cell, in a process called Photobiomodulation, to manufacture various healing substances, including anti-inflammatories, which also reduce pain.

STIMULATE THE PRODUCTION OF ADENOSINE TRIPHOSPHATE (ATP):  ATP is the major energy currency in all cells which allows them to function. ATP provides the chemical energy that supports most chemical reactions within the cell. The release of nitric oxide by LLLT unlocks the aerobic metabolism of our mitochondria allowing them to produce more ATP which allows the cell to function properly.

Q: Why are there only three wavelengths used?

A: While the sun’s light is “full spectrum” and essential for life, the bulk of current medical research is focused on the wide range of wavelengths within the red, blue and infrared spectrums.

Q: Who is it for?

A: InLight Medical light systems are appropriate for both clinical and home use settings. Systems are available with 2/PORT and 6/PORT PRO controllers and a variety of therapy pad shapes and sizes including the Brilliant LightCap.  Each therapy pad has two or three wavelengths (colors). These choices allow you to customize your system to better fit your needs.

FAQs: Devices

Q: What are the differences between each program setting?

A: InLight controllers are designed with proprietary Progressive Multi-Pulse™ Technology, providing state of the art delivery of the polychromatic light. The automatic settings A, B, and C contain a diverse combination of the Progressive Multi-Pulse™ Technology frequencies, giving consumers the most advanced therapeutic benefit possible. Users simply alternate between the A, B and C settings to receive the highest benefit from the system.

Q: Is 7 the strongest setting?

A: No. The manual settings, 1 – 7, are simply different frequencies or rates of pulsing of light in cycles/seconds or Hertz. Each setting delivers the red, blue, and/or infrared light at different pulse rates, because studies suggest that different people and tissues respond to the pulsing of light differently.

Q: Why are there different pad shapes?

A:  InLight has listened to their customers and designed the flexible neoprene pads shape to fit body areas more comfortably.

Q: Why are some of the lights on InLight Medical devices dark?

A: The “dark” rows on InLight devices are the rows of infrared diodes. Infrared wavelengths are just outside of the human visible color spectrum.

Q: Are the pads safe to use on animals?

A: We have received stories and photos of customers using the devices on animals. LED light therapy has been shown to be effective for canine pain therapy, and for reliving pain and healing injuries in sport horses.

Q: Do I have to use a specific pad on a specific part of my body?

A: No. While some pads are designed to fit certain parts of the body better than others, any LED light therapy pad can be used on any part of the body.

Q: How long should I use my light pads?

A: The InLight Medical System controllers are built with an automatic shut-off timer for 20-minute applications. Application time varies from person to person, ranging from 20-minutes 3 times/week to daily to twice daily.

InLights’ unique Progressive Multi-Pulse™ Technology allows for multiple daily applications. We recommend not exceeding 60 minutes of application to an area in a 24-hour period.

Q: How do I use the pads?

A: Using your system is as simple as placing the PLT pads light side-down against the skin of the target area and turning the controller on. Pads can be moved and repositioned during the 20-minute session as needed.

Q: How do I clean the pads?

A: You can use a disinfectant wipe to clean the LEDs and neoprene of the pad.  WE recommend you slip the pads into a clear plastic bag when applying to open wounds to prevent pad soiling with bodily fluids.   Many users clean the pad with a liquid cleanser; first spray the cleanser onto a paper towel and then use the paper towel to wipe down the pad. Never soak or submerge the pad.

Q: I have a 6/PORT controller. What does the “MUTE” button do?

A: The MUTE button enables you to chose between having a silent timer countdown or have a beeping to notify you of when the 20-minute session is complete.

FAQs: The Company

Q: How are ILM systems different than other light therapy systems?

A:  InLight Medical products have many features that set it light years (no pun intended) ahead of any other product on the market.

  1. InLight Medical has a 30 year history of manufacturing innovation and customer satisfaction.
  2. The InLight Medical devices are FDA-cleared, assuring efficacy and customer safety.
  3. Every InLight PLT therapy pad provides a polychromatic light application.
  4. In Light Medical’s proprietary Progressive Multi-Pulse™ Technology is unique in the industry, delivering the absolute best polychromatic therapeutic advantage.
  5. With over 30 years in the business, In Light Medical products have never caused reported harm or injury to its users.

FAQ: Sales

Q: How do I purchase a system?

A. Contact an account representative in your area using the Inlight Representative locator, visit our Contact Page, or you may e-mail

FAQs: Warranty and Repair Information

Q: My device needs repair, is it under warranty?

A: You can read about our warranty and repair policy and information, and to fill out the Return and Repair Authorization form.

Q: What do I need to send in for a warranty/repair order?

A: We ask that you send your entire system in when doing a repair order so that we may diagnose the entire system for causes to your issue. Your shipment should include the pad(s), controller(s), and the power supply provided with each system.

Q: What is the return policy?

InLight Medical has a 30-day return policy. To return your system for a refund, please contact the dealer or distributor from whom you purchased the system.

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