What Is the Fotona Laser and How Does It Work?

Fotona is the name of a company that makes medical lasers, and its systems combine two different laser wavelengths in one device: erbium-doped YAG (Er:YAG) at 2940 nanometres and neodymium-doped YAG (Nd:YAG) at 1064 nanometres. Each wavelength interacts with the skin in its own way. Having both lets a trained clinician choose the right kind of light energy for a specific concern, from unwanted hair to rough texture.

This article explains the basic science in plain terms, what each wavelength is generally used for, and what a laser like this cannot do.

A quick primer: why wavelength matters

Laser light is a single, focused colour of light. That colour, measured as a wavelength in nanometres (nm), decides what the energy is absorbed by once it enters the skin. Different parts of the skin absorb different wavelengths. The three main "targets" are water, melanin (the pigment in skin and hair) and hemoglobin (the red pigment in blood).

When a target absorbs laser energy, that energy turns into heat. Depending on the settings, the heat can gently warm tissue, damage a specific structure such as a hair follicle, or remove a very thin layer of skin. The skill lies in matching the wavelength, energy, pulse length and spot size to the job, and to the person's skin.

Er:YAG (2940 nm): the surface specialist

The Er:YAG wavelength is absorbed very strongly by water. Because skin cells are mostly water, this light does its work close to the surface and does not travel deep. At higher settings it vaporises (ablates) extremely thin layers of skin in a controlled way. At lower or specially timed settings it warms the tissue without removing it.

Clinically, that makes Er:YAG useful for:

• Skin resurfacing for fine lines, uneven texture and sun damage
• Softening the look of some acne and surgical scars
• Light "peel-like" treatments that refresh the surface
• Gentle heating treatments, including some done inside the mouth to target tissue from beneath

Er:YAG is often described as producing less heat spread into surrounding skin than some other resurfacing lasers. Even so, any treatment that removes skin needs proper healing time and careful aftercare. You can read more in our guide to laser skin resurfacing.

Nd:YAG (1064 nm): the deeper reach

The Nd:YAG wavelength is absorbed much less by water and only moderately by melanin and hemoglobin. As a result it passes deeper into the skin before it is absorbed. That depth makes it suitable for a different set of tasks:

• Laser hair removal, including for people with darker skin tones
• Small visible blood vessels on the face and some leg veins
• Deeper heating to encourage collagen remodelling and mild tightening
• Selected other uses, such as some nail and wart treatments, where evidence is more limited

Because the surface pigment of the skin absorbs this wavelength less, Nd:YAG carries a lower risk of burning or discolouring darker skin than shorter wavelengths used for hair removal. The trade-off is that it can be less effective on fine or light hair. Our article on how laser hair removal works goes into this in more detail.

Why combine two wavelengths?

Many skin concerns involve more than one layer. Sun damage, for example, may show up as rough surface texture, scattered pigment and small blood vessels at the same time. A device with two wavelengths allows a clinician to treat the surface with one and deeper structures with the other, sometimes in the same appointment and sometimes in a planned series.

Combining steps is not automatically better. More energy in one session can mean more swelling, more downtime and more risk. A sensible plan is built around your skin, your goals and how much recovery time you can realistically take.

What a laser cannot do

It helps to be clear about limits. A laser does not replace surgery for significant skin laxity, deep folds or heavy jowls. It does not relax the muscles that cause expression lines the way a neuromodulator does, and it does not add volume the way filler does. Results build gradually, usually over several weeks to months, and often need more than one session.

Results vary from person to person. Age, skin type, sun habits, smoking, genetics and how closely aftercare is followed all play a role.

Who should not have laser treatment, or should wait

Laser is a medical procedure, and a medical history comes first. Treatment is usually postponed or reconsidered if you:

• Are pregnant or breastfeeding (treatment is generally deferred because safety data are limited)
• Have an active skin infection, open wound or cold sore in the area
• Have a recent tan, sunburn or self-tanner on the skin to be treated
• Have taken isotretinoin recently, or take medicines that make skin more sensitive to light
• Have a history of keloid or raised scarring
• Have an unexplained or changing mole or spot, which should be checked by your family doctor or a dermatologist first
• Have certain conditions that affect healing, such as poorly controlled diabetes or some autoimmune diseases

Never stop a prescribed medication on your own to qualify for a treatment. If a medicine is relevant, it should be discussed with the doctor who prescribed it.

Main risks and side effects

Common, short-lived effects include redness, warmth, swelling and a sunburn-like feeling. With resurfacing, expect flaking or peeling for several days. Less common risks include blistering, burns, infection, and changes in skin colour, either darker (hyperpigmentation) or lighter (hypopigmentation). Pigment changes are more likely in darker or tanned skin and are usually, but not always, temporary. Scarring is rare but possible.

Laser light can seriously injure the eyes, which is why everyone in the room wears protective eyewear designed for the specific wavelength. Lasers used in Canadian clinics must be licensed by Health Canada as medical devices.

Frequently asked questions

Is "Fotona" a type of treatment?

No. Fotona is the device manufacturer. Many different treatments can be performed with the same device, each using different wavelengths and settings. It is more useful to ask which specific treatment is being recommended and why.

Does it hurt?

Sensations range from mild warmth to a snapping or stinging feeling, depending on the treatment. Cooling and, for some procedures, topical numbing cream are used to improve comfort.

Can it be used on all skin tones?

Some treatments, especially Nd:YAG hair removal, can be adapted for a wide range of skin tones. Others, such as deeper resurfacing, carry more pigment risk in darker skin and need extra caution or a different approach.

How do I know which treatment I need?

That depends on an in-person assessment of your skin, medical history and goals. Sometimes the honest answer is that skincare, sun protection or a referral is a better first step.

If you are curious whether laser treatment fits your situation, HealthPark Medical Aesthetics offers consultations where your skin and history are reviewed before any recommendation is made. You are welcome to ask questions, take time to think, and decide without pressure.