What to expect from laser hair removal for hypertrichosis

Hypertrichosis means excess hair growth that is not limited to a typical hormone-sensitive pattern. Laser light is absorbed by pigment in the hair and converted to heat near the follicle. Only hairs in a suitable growth stage respond at a given visit, so repeated appointments are commonly needed. Darker, coarser hair generally gives the device more pigment to target; very light, grey, or white hair may respond less well. The treatment reduces hair in selected areas and does not explain why the growth began.

Have a skin assessment before treatment, especially if the hair appeared suddenly or follows a new medicine. Tell the clinician about tanning, skin conditions, medicines, cold sores, and prior pigment changes. Do not tan the area, and follow instructions on shaving and stopping waxing or plucking. During treatment, protective eyewear is used and you may feel heat or quick stinging. Afterwards, cool the skin as advised, use gentle products, protect it from sunlight, and avoid picking or irritating the treated area.

Ask the clinic to review severe pain, blistering, crusting, spreading redness, pus, or a dark or light patch that does not settle. Arrange a medical review if excess hair is new, rapidly changing, widespread, or accompanied by weight change, weakness, menstrual changes, or other symptoms. Treating the hair and finding a possible cause are separate parts of care.

Is my hair colour suitable for this device? Should the new growth be investigated before cosmetic treatment? Which areas can be treated safely? What should I use if the skin feels hot or irritated afterward?