What should you know about a second-hand laser hair removal machine?

Laser hair removal works by delivering selected light energy to hair follicles. The model, wavelength, cooling system, handpiece and settings affect how that energy reaches the skin. A used device may have an incomplete service history, worn parts, altered settings or a cooling system that no longer works as intended.

The right device also depends on hair colour, skin tone, treatment area and the goal of reducing unwanted hair. Alexandrite Laser, Diode Laser and Nd:YAG Laser have different operating characteristics. Ingrown Hairs, Razor Bumps or Hirsutism may need a broader assessment rather than a device purchase alone.

Ask for the exact model, ownership history, service records, manufacturer instructions and evidence that safety checks were completed. Confirm that protective eyewear matches the device and that the emergency stop, cooling system and treatment handpiece function correctly. A qualified professional should inspect the machine and carry out a patch test using an appropriate setting.

Do not use a device on recently tanned, sunburned, irritated or infected skin. Share medicines, pigment changes, scarring history and conditions such as Hidradenitis Suppurativa or Keratosis Pilaris with the treating clinician. Shaving may be advised, while waxing or plucking can interfere with the follicle target.

Stop treatment and seek medical advice for blistering, intense or persistent pain, marked swelling, spreading redness, pus, fever, eye symptoms or a new light or dark patch that does not settle. Urgent care is appropriate after a suspected eye exposure or a burn involving a large area.

Ask whether the device suits your skin and hair, who will operate it, when it was last serviced, how settings will be selected, what patch-test result is acceptable and how a reaction will be managed.