What should you know about laser LED diode?

The word diode describes the light source inside the device. In dermatology, the beam is selected and calibrated so its energy is absorbed more strongly by a target such as pigment in a hair shaft. Heat then affects the follicle, which can reduce future hair growth. The same technology is not suitable for every skin tone, hair colour, body site, or medical history.

A consultation should cover recent tanning, medicines that increase light sensitivity, active irritation, cold sores near the area, and any tendency to form raised scars. Eye protection is used whenever the treatment area and device require it.

Before treatment, follow the clinic's instructions about sun exposure and hair removal. Shaving may be requested, while waxing or plucking can remove the follicle target. Arrive with clean skin and tell the clinician about new products, medicines, or a change in pigmentation.

Afterward, mild warmth, redness, or temporary swelling around follicles can occur. Use gentle cleansing, avoid rubbing and heat until the skin settles, and protect the area from sunlight. Do not apply irritating exfoliants or fragranced products unless your clinician says they are suitable. Read about [Diode Laser](/technology/diode-laser/) and [Laser Hair Removal](/treatments/laser-and-energy/laser-hair-removal/) for related information.

Contact the treating clinic if blistering, open skin, marked swelling, increasing pain, pus, or a spreading rash develops. Seek urgent medical help for breathing difficulty, facial swelling, or a severe allergic reaction. New or persistent lightening or darkening should be assessed rather than treated again without advice.

Ask which target the diode laser is intended to treat, how your skin tone and recent sun exposure affect the settings, what sensation and recovery to expect, and which symptoms should prompt a review. Ask whether your current medicines or skin products need to be paused.