Claiming that one laser works for every client is convenient advertising, but poor physics and poor safety practice. Devices differ in light source, wavelength, pulse shape, spot size, delivery method and cooling. A marketed multi-wavelength handpiece does not become three separate lasers simply because three numbers are printed on it. One system may also offer different handpieces and modes. The practitioner should start not with the logo, but with two questions: is there a suitable target, and does this specific device permit treatment under the current conditions?
Separate technology and brand
A 755 nm alexandrite laser, diode systems commonly operating around 800-810 nm and a long-pulsed 1064 nm Nd:YAG laser have different physical characteristics and typical uses. IPL is intense pulsed light, not a laser.
One brand name may cover several generations and handpieces. The decision requires the exact model, configuration, instructions and service status, not the product line’s reputation on social media.
Match tool to target
Hair colour and diameter determine whether sufficient melanin is available as a target. Blonde, grey, red and many vellus hairs may respond poorly regardless of device price. Higher energy cannot create missing pigment.
Skin pigmentation, fresh tan, inflammation and previous reactions determine the margin of safety. Darker skin is not an automatic exception, but may require different technology, protocol and more skill.
Consider practitioner and system state
The right technology cannot compensate for poor marking, incomplete contact, a dirty window, faulty cooling or copied settings. Pre-shift checks, maintenance records and training are part of treatment quality.
The practitioner uses only approved modes and works within the authorised limits. Any update, handpiece change or doubt about system operation requires verification, never experimentation on a client.
Discuss the device without ranking technologies
Explain that the selected device has documented capabilities and that treatment will be decided after assessing the area and history. There is no need to disparage competing technology or promise the same result to every client.
If the hair does not provide a suitable target or current skin condition requires postponement, an honest refusal demonstrates professionalism. A logo is never a reason to ignore restrictions.
- Name the exact technology and model.
- Do not confuse IPL with laser.
- Assess the hair and skin of a specific area.
- Check the handpiece, cooling and service.
- Do not promise suitability to all clients.
Key takeaways
- The device is a system of characteristics, not just a name.
- Suitability depends on the target, skin, IFU and practitioner competence.
- A high device price does not change the limits of its technology.
Sources and scope of use
- Medical Lasers, U.S. Food and Drug Administration. Use to describe the regulatory status and general principles of medical lasers. Do not derive a treatment protocol or the authorised indications of a specific device from this source.
- The role of lasers and intense pulsed light technology in dermatology, National Library of Medicine, PubMed Central. Use to explain chromophores, wavelength families, the role of pulse duration, epidermal cooling and the distinction between lasers and IPL. Do not use general ranges as instructions for a specific device.
- On the physics of laser-induced selective photothermolysis of hair follicles: influence of wavelength, pulse duration, and epidermal cooling, Lasers in Surgery and Medicine / National Library of Medicine. Use to explain the relationship between wavelength, pulse duration and cooling. Do not publish experimental values as a universal settings formula for different devices.
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