Laser Technology, Explained in Plain Words
Different lasers treat different problems. This guide explains the main types of laser treatments we use in Niagara, organized by wavelength and what each one targets: hair, pigment, redness, ink and skin texture. No brand names and no jargon, just what each light does and who it suits.
Why the Wavelength Matters
Every laser fires one exact colour of light, measured in nanometres (nm). Each colour is absorbed by one specific target in the skin. That is the whole trick.
The three main targets: melanin in hair and brown spots, haemoglobin in blood vessels, and water in every skin cell.
Match the wavelength to the target, and the light turns to heat right where you want it. That is why the types of laser treatments differ so much. This page covers the wavelengths behind our whole laser treatments menu. We name no machines on purpose. The physics matters more than any brand.
Three Lasers Cover Hair Removal
Hair removal lasers aim at the melanin inside the hair shaft. The heat travels down and disables the follicle. A clinical review of laser hair removal explains how each wavelength does this.
755 nm alexandrite
Melanin absorbs this wavelength strongly. It suits lighter skin, Fitzpatrick I to III, and handles finer hair well. Large areas go quickly.
810 nm diode
The workhorse. It balances melanin absorption with deeper reach, so it suits light through olive skin. Most hair removal in Niagara happens at this wavelength.
1064 nm Nd:YAG
It largely passes surface pigment and heats the follicle at depth. It is the established choice for deeper skin tones.
Results at any wavelength are long-term hair reduction, not total removal. Most areas need 6 to 8 sessions, spaced 4 to 6 weeks apart. Start with our laser hair removal overview.
Light for Pigment and Redness
532 nm KTP
A green light absorbed by melanin and haemoglobin. It treats surface brown spots and small facial vessels.
Pulsed dye, 585 to 595 nm
A yellow light tuned to haemoglobin. The classic option for port wine stains, rosacea redness and red scars.
IPL, 500 to 1200 nm broadband
IPL is not technically a laser. It is a broadband flash lamp releasing many colours at once, reaching melanin and haemoglobin together. This lets an IPL photofacial even out brown spots and background redness in one visit.
Picosecond lasers
These fire ultra-short pulses that shatter stubborn pigment into fragments the body clears. Picosecond wavelengths include 532, 755, 785 and 1064 nm. No single machine fires all of them. Read how this applies to laser pigmentation removal.
Resurfacing Lasers, From Gentle to Deep
Resurfacing lasers all aim at water in the skin. They differ in depth and whether they remove the surface.
Ablative: CO2 at 10,600 nm and Er:YAG at 2,940 nm
Ablative lasers vaporize the outer skin layer and heat the layer beneath. CO2 goes deepest and remodels significant wrinkles and deep acne scars. Er:YAG works more precisely with less spread of heat. Both need real recovery time. A clinical overview of ablative laser resurfacing covers both in detail.
Non-ablative: 1540 and 1550 nm, plus 1927 nm thulium
These heat the deeper skin while leaving the surface intact. Downtime is minimal and results build over a series. The shallow 1927 nm thulium wavelength suits sun damage and surface pigment.
Fractional or full-field
Full-field treats the whole surface at once. Fractional treats tiny columns and leaves untouched skin between them, so healing is faster. Both approaches exist in ablative and non-ablative forms. Our laser skin resurfacing hub compares the options we offer in Niagara.
Lasers With Medical Uses
The 1064 nm wavelength also has a medical job. It heats the nail bed to reduce the fungus behind discoloured toenails. See our toenail fungus laser page. The American Academy of Dermatology reports that lasers show promise for nail fungus treatment, though stronger trials are needed.
Low-level laser therapy is different again. It uses low-power red light, around 635 nm, without heat you can feel. It is offered in Niagara for thinning hair, nail health and pain relief. The independent evidence for these uses is mixed. We present it as an option with realistic expectations, never a sure thing.
Deeper Skin Tones Change the Laser Choice
Dermatologists group skin into six Fitzpatrick types, from very fair to deeply pigmented. Darker skin holds more melanin at the surface. Short wavelengths absorb into that surface melanin, which raises the risk of burns and pigment changes.
This is why 1064 nm Nd:YAG is the established choice for types IV to VI. It reaches its target while mostly bypassing surface melanin. Our page on laser hair removal for dark skin tones covers this in depth.
Resurfacing needs even more care. Er:YAG spreads less heat than CO2. Even so, both ablative lasers carry elevated risk of pigment changes and scarring in types V and VI. Neither is a default. We treat non-ablative fractional as the conservative first choice for these skin types. Ablative resurfacing is a case-by-case decision made at your consult, where the right wavelength is chosen for your skin.
When the Right Answer Is Not Light at All
Everything above works by absorption. A laser emits one wavelength, something in the skin absorbs it, and that absorption becomes heat. Choose the wrong wavelength and the wrong thing absorbs it.
Radiofrequency skips that logic entirely. It passes current through tissue and lets electrical resistance make the heat. Because nothing has to absorb a colour of light, radiofrequency does not target a specific chromophore. Pigment is far less of a factor.
That is why RF microneedling sits on this site alongside the lasers. Paired with fine needles, it carries heat deeper than most light-based treatment while doing less to the surface. For depressed acne scars and early laxity, it is often the better tool. If you have seen the name Morpheus8, that is a brand of this technology, not a different one.
We would rather explain the physics than list trademarks. The tool matters less than whether it matches your skin and your goal.
Laser Technology Questions, Answered
What is the difference between a laser and IPL?
A laser fires one exact wavelength, so it heats one target with precision. IPL is not a laser. It is a broadband flash lamp releasing a range of wavelengths, about 500 to 1200 nm. That spread treats brown spots and redness together, with less depth.
Why are there so many types of laser treatments?
Because skin has several different targets. Melanin, blood and water each absorb different colours of light. One wavelength cannot heat all of them well. So clinics carry several wavelengths, each matched to a job: hair, vessels, pigment or texture.
Which laser is best for darker skin?
For hair removal and many other uses, 1064 nm Nd:YAG is the established choice for Fitzpatrick types IV to VI. It passes through surface melanin and heats deeper targets. For resurfacing in types V and VI, non-ablative fractional is the conservative first option.
Can one machine do every treatment?
No. Each wavelength suits certain jobs, and no single device fires them all. Even picosecond platforms each emit only some of the 532, 755, 785 and 1064 nm wavelengths. A full menu takes several technologies, matched to your skin at a consultation in Niagara.
Are ablative lasers better than non-ablative?
Neither is better. Ablative lasers remove the surface, so one session changes deep wrinkles and scars the most, with real downtime. Non-ablative lasers heat below an intact surface, so recovery is short but you need a series. Gentler sessions add up, with less risk.
Do lasers really clear toenail fungus?
Sometimes, and we will not overstate it. The 1064 nm laser heats the nail bed to reduce fungus. Published results vary widely, and dermatology groups say stronger trials are still needed. Expect gradual improvement over months as the nail grows out, not an instant fix.
Browse the full menu of laser treatments in Niagara, or start with our conditions we treat guide. Then book a consultation and we will walk you through the types of laser treatments that fit your skin.