How to prepare
If you are planning on undergoing laser hair removal, you should limit plucking, waxing, and electrolysis for six weeks before treatment. That's because the laser targets the hairs' roots, which are temporarily removed by waxing or plucking. You should also avoid sun exposure for six weeks before and after treatment. Sun exposure makes laser hair removal less effective and makes complications after treatment more likely.
What to expect
Just before the procedure, your hair that will be undergoing treatment will be trimmed to a few millimeters above the skin surface. The laser equipment will be adjusted according to the color, thickness, and location of your hair being treated as well as your skin color. Depending on the laser or light source used, you and the technician will need to wear appropriate eye protection. It will also be necessary to protect the outer layers of your skin with a cold gel or special cooling device. This will help the laser light penetrate the skin. Next, the technician will give a pulse of light to the treatment area and watch the area for several minutes to make sure the best settings were used and to check for bad reactions.
Recovery and risks
For a day or two afterward, the treated area of your skin will look and feel like it's sunburned. Cool compresses and moisturizers may help. If your face was treated, you can wear makeup the next day unless your skin is blistering. Over the next month, your treated hair will fall out. Wear sunscreen for the following month to help prevent temporary changes in the color of the treated skin.