Frequently Asked Questions

Find answers to common queries.

For specific questions, please feel free to contact us directly here:

The Science

What is the meaning of the word wavelength in Red Light Therapy?

In the context of red light therapy, the term "wavelength" refers to the distance between two peaks in the electromagnetic wave of red or near-infrared (NIR) light used for therapy. Red and NIR light used in therapy have different wavelengths, and the specific wavelength range used can affect the therapeutic outcomes.

Red light therapy typically uses wavelengths in the range of 620 to 750 nanometers, while near-infrared light used in therapy typically ranges from 750 to 1200 nanometers

What wavelengths are used in the CERA Headband?

The CERA Headband is a red light therapy device that uses multiple wavelengths for therapeutic purposes.

The wavelengths used in the CERA Headband are:
630 nanometers (nm)
850 nm
940 nm
1070 nm

These wavelengths have been chosen for their specific therapeutic effects.
In order for light to penetrate the skull and reach the brain, longer wavelengths of light are needed. This is because longer wavelengths, such as those in the near-infrared (NIR) range (e.g., 850 to 1070 nm), are able to penetrate deeper into tissue than shorter wavelengths (e.g., 630 to 660 nm).

The skull is relatively thick and dense compared to other tissues in the body, and shorter wavelengths of light are absorbed more readily by the tissue and scattered, limiting their ability to penetrate deeper. Longer wavelengths, on the other hand, are less absorbed and scattered by the tissue, allowing them to penetrate deeper and reach the cortex of the brain.

This is why red light therapy devices that are specifically designed for brain stimulation use longer wavelengths in the NIR range.

What is a brain wave?

A brain wave, also known as neural oscillation, refers to the electrical activity that is produced by the brain when it is functioning. Brain waves are generated by the synchronized activity of large groups of neurons as they communicate with each other through electrical impulses.

Why do different brain waves exist and what do they do?

Brain waves, or neural oscillations, are thought to exist because they facilitate communication between different regions of the brain. The brain is a complex network of neurons that are constantly communicating with each other to perform various cognitive, sensory, and motor functions. Brain waves are generated by the synchronized activity of large groups of neurons as they communicate with each other through electrical impulses.

These electrical signals produce different patterns of brain waves that are associated with different states of consciousness, mental activity, and sensory processing. For example, slow delta waves are associated with deep sleep, while fast gamma waves are associated with attention and conscious perception.

Brain waves are also thought to be involved in various cognitive processes, including memory consolidation, attention, and sensory processing. For example, studies have shown that alpha waves are associated with attentional focus and memory consolidation, while theta waves are associated with creative thinking and problem-solving.

Can we modulate brain waves with light?

There is growing scientific evidence to support the use of modulated light to influence brain waves. It may work by entraining the brain to a specific frequency. This is based on the concept of neural entrainment, which suggests that the brain has a natural tendency to synchronize its activity to external rhythmic stimuli.

In the case of modulated light, the rhythmic changes in the light frequency may influence the brain's electrical activity and cause it to synchronize with the frequency of the light. This can result in changes in the amplitude and frequency of brain waves, which can affect cognitive states such as relaxation, focus, and alertness.

What pulsed frequencies does the CERA Headband offer?

The CERA Headband employs pulsed frequencies at 7.8 Hz, 10 Hz, 40 Hz, and 100 Hz.

How do I select which pulsed frequencies to use?

The pulsed frequencies in the CERA Headband are configured in its six preset programs, each with a distinct function based on its name. Users have the option to manually select the program, but it is recommended to seek guidance from a brain coach. Additionally, there is an option to choose a program with a constant wave that does not have pulsing frequencies.

Health Benefits

How does it work?

The CERA System emits red light that penetrates the skull to reach the brain, as well as irradiating the gut, where it activates photoreceptors and triggers a series of biological responses that promote the production of energy and neurotransmitters, leading to improved brain function and enhanced gut-brain communication.

Do I need a brain coach or can I self select the protocols?

The CERA System has 6 pre-set programs that will allow you to select the most appropriate protocol for your own wellness goals. To get the most from the system we do recommend taking up the CERA brain coaching sessions, or seeking the advice of a qualified expert.

What are the benefits of having a brain coach?

The CERA System can be used with the pre-set programs to give a general increase in wellness and body harmony over time. In order to use the system in the most effective way, a brain coach will take your case history and possibly some measurements of brain function and health status - and will use these metrics to give you a bespoke program to meet your specific goals. You will be assessed and supported on a regular basis to see if the intervention is having the desired effect, and to make changes to the protocol as you progress on your wellness and performance journey. If you use a tracking device such as an Oura ring, Whoop, Garmin or similar - the data can be used to assess your progress.

When will I see results of the therapy?

We are all different, and we all respond to therapeutic interventions at different rates. The time it takes to see real differences in wellness and performance depends on your starting point and the effort and dedication you put into your own wellness program, as well as other lifestyle factors.  In some studies, participants reported improved mood and cognitive function after a few sessions of red light therapy. However, in other cases, it may take several weeks or even months of consistent treatment to see significant improvements. It is important to note that red light therapy is not a one-size-fits-all solution and the results may vary from person to person.

Are there any side effects associated with Red Light Therapy?

Red light therapy for the brain is generally considered safe, but some people may experience temporary side effects, such as headaches, dizziness, or skin irritation. It is important to follow the recommended guidelines and protocols to minimize the risk of any potential side effects.

Can I overdose on Red Light?

You can overdo it. Light therapy has what is known as a bi-phasic dose response. That means that too little light will have little effect, and too much light may cancel out any benefits. There is a sweet spot. We recommend using the CERA System once a day or 3-5 days a week, or have the instruction of a CERA brain wellness coach.

Do the devices get hot?

The devices use infrared light, so there will be some warmth generated. The devices are not uncomfortably hot.

What about EMF emissions?

We are very aware of the deleterious effects of non-native EMF’s and have taken steps to ensure that the CERA System has extremely low EMF emissions. The battery is shielded and there is a Bluetooth kill switch feature on the headband to prevent Bluetooth communication whilst the device is on the head.

Does time of day matter?

Our bodies have a circadian clock that is entrained with the phases of the sunrise and sunset. As the CERA System contains red and near infrared light as is predominantly seen at these times of day – it is possible that using the devices within these times will be most beneficial. However, the system can be used any time that works with your schedule.

Can children use the CERA System?

Yes, if supervised by an adult and under the guidance of a healthcare professional.

Do I need to cover my eyes while using the CERA System?

No, the headband fits over the forehead and so the light will not shine in the eyes. We recommend not to look at the lights while they are turned on.

Can I wear clothes underneath my CERA body panel?

The light should shine directly on to the skin. You can wear clothes but make sure the CERA headband and CERA body panel are used on bare, clean and dry skin. 

Is there a warranty on the CERA system?

Yes, there is a warranty of at least 12 months. Please refer to the manual for the warranty in your specific region.

Are there any scientific studies on Red Light Therapy and where can i find them?

Yes, there have been scientific studies on red light therapy. In fact there are 1000’s of peer reviewed scientific papers on the topic. You can find these studies by searching online academic databases such as PubMed (, Scopus (, and the Cochrane Library ( In these databases, you can search for studies using keywords related to red light therapy, such as "photobiomodulation," "near-infrared light therapy," or "low-level laser therapy." You can also search for specific conditions or areas of the body that you are interested in to find studies that are relevant to your needs. Additionally, many studies can also be found by searching the websites of professional organizations in the field, such as the World Association for Laser Therapy ( and the International Association of Photobiomodulation (

CERA System & App

Does the CERA System habe FDA Approval?

The CERA System is FDA listed. That is not the same as FDA approved. At the moment, there is no classification for red light therapy as a therapeutic for a brain health condition. We are hoping to do our part in supporting research to change this. We will soon have a 510K classification for pain reduction, wound healing and increased micro-circulation.

This means that we cannot make claims to cure, prevent, treat or diagnose any brain illness.

Is the CERA System the same or similar to a SAD (Seasonal Affective Disorder) Lamp?

No, SAD lamps contain a full spectrum (all colors or wavelengths) of light to mimic the Sun, stimulating a hormonal response. The CERA system uses only red and near infrared light to deliver energy to the body – although the CERA System may help boost mood.

Can the CERA Headband be used independently of the body panel?

Yes, you can use the CERA Headband without using the CERA Body Panel to target the brain only. We recommend using the devices together for maximum therapeutic effect.

Can the CERA Body Panel be used independently on other parts of the body?

Yes, you can use the CERA Body Panel on joints, limbs and anywhere else you would usually use a red light device. You do not need the CERA App for this.

Can the infrared light really penetrate the skull and impact the brain?

Yes! Near infrared light can penetrate bone and reach the outer layer of the brain. The longer the wavelength of light, the deeper the penetration. The CERA Headband contains 3 different wavelengths of near infrared from 850-1070 nm in order to reach the maximal amount of light receptors in the brain.

Does the CERA System irradiate the whole head?

There are light clusters on the forehead and one that goes one the back of the head under the hairline. The CERA Headband does not cover the whole head. The reason for this is that hair is a barrier for light. The best way to get light to the brain is via the prefrontal cortex on the front part of the brain. The brain is a connected network of neurons and support cells. There is evidence that the therapeutic effect of shining light to the forehead area is brain wide via these connected networks, and by stimulating the blood around the head and body.