What should you know about the most powerful diode laser?

A diode laser delivers a selected wavelength of light that is absorbed by pigment in the hair follicle. The aim is to heat the follicle enough to reduce its ability to produce hair while limiting heat to surrounding skin. Hair thickness, hair colour, skin tone, recent tanning and the body area all affect the settings. A professional adjusts pulse duration, cooling and energy rather than relying on the word powerful. [Diode Laser](/technology/diode-laser/) is one technology used for this purpose.

Arrange a consultation so the operator can assess your skin and hair and explain expected changes. Avoid waxing or plucking for the interval advised, because the follicle needs to be present for the light to target it. Tell the clinic about tanning, pigment disorders, medicines and previous reactions. Follow shaving, cooling and sun-protection instructions, and attend the recommended treatment schedule. More detail is available in [Laser Hair Removal](/treatments/laser-and-energy/laser-hair-removal/).

Ask for medical advice if redness becomes increasingly painful, blisters appear, swelling is marked, or light and dark patches persist after treatment. Seek review for an infection-like rash or worsening discomfort. A reaction can reflect settings, aftercare or another skin problem, so do not repeat treatment over affected skin until it has been assessed.

Ask which wavelength and settings suit you, how cooling will be used, how many visits may be needed, and how your skin should be protected between visits. Ask what temporary reactions are expected and who to contact if they become severe.