The machine, the wavelength, the cooling — explained plainly.
A real medical-grade 800nm diode laser with a contact-cooled tip. The wavelength specifically chosen for safe results across the full Fitzpatrick scale. The cooling that makes 15-minute sessions tolerable.
Venus Velocity, by Venus Concept.
An FDA-cleared, medical-grade diode laser made by Venus Concept (Toronto). 800nm wavelength. Sapphire contact-cooling tip with built-in temperature control. Designed and licensed specifically for permanent hair reduction.
It is, in plain language, a real laser. Not an IPL bulb. Not an over-the-counter device. The same category of equipment used in dermatology clinics across the UK — and the wavelength specifically chosen to be safer for darker skin tones than the older Alexandrite-only systems most chains still run.
Diode · near-infrared
Sapphire contact tip
Full Fitzpatrick scale
Concept
Toronto · FDA cleared
Light, melanin, follicle. That's the whole story.
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01
Light at 800nm
Near-infrared light is delivered through the sapphire tip directly onto skin. It passes through the epidermis without absorbing.
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02
Melanin in the hair shaft absorbs it
800nm is the wavelength most efficiently absorbed by hair melanin and least absorbed by skin melanin. That's the safety margin for darker skin tones.
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03
The follicle bulb is heated, briefly
Heat travels down the shaft, denatures the follicle's regrowth structure. The follicle either stops producing hair, or produces hair that's finer.
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04
The cooled tip protects the skin surface
The sapphire tip is chilled to −4°C and pressed against the skin during each pulse. This is what turns a sharp pain into a warm sensation, and why sessions are short and tolerable.
Pulse mode. Slide mode.
The Venus Velocity delivers energy in two distinct ways. Most clinics pick one and use it everywhere. We switch by area, because the body isn't one shape.
Pulse mode
For small & precise areasStationary shots delivered one at a time, each placed precisely. The handpiece doesn't move during the pulse — it fires, lifts, repositions, fires again.
Used for: upper lip · chin · sideburns · cheeks · underarms · bikini line · areas near bone or contour
Slide mode
For larger flat areasContinuous gliding motion across the skin with the cooled tip in constant contact. The handpiece moves; the energy flows. Faster, smoother, more even coverage on broad surfaces.
Used for: legs · arms · back · chest · abdomen · shoulders
Switching between the two during a single session is normal — half a leg in slide, the bikini line in pulse. Different tools for different shapes of skin.
They are not the same thing. Not even close.
Diode laser (Venus Velocity)
What we use- Light source
- Coherent, single wavelength (800nm)
- Target precision
- Hair melanin specifically
- Skin tones
- Safe for Fitzpatrick I–VI
- Permanence
- Long-term reduction up to 80%
- Sessions to result
- 6–8, every 4–6 weeks
- Regulatory class
- Medical device (Class IIb in EU)
IPL (Intense Pulsed Light)
What most "salon laser" really is- Light source
- Broad-spectrum flash (filtered)
- Target precision
- Scattered absorption across skin
- Skin tones
- Typically I–III only
- Permanence
- Reduction; significant regrowth common
- Sessions to result
- 10–14, with frequent top-ups
- Regulatory class
- Cosmetic device (lower class)
If a clinic doesn't tell you which they use, the answer is usually IPL — and the question is worth asking.
All six Fitzpatrick types. Built for this.
The 800nm wavelength is preferentially absorbed by hair melanin over skin melanin. That's the technical reason it's safer for darker skin — and the reason older Alexandrite-only chains often won't treat Fitzpatrick V–VI safely. Patch-tested at every consultation, with settings logged.