Laser hair removal is one of the most common treatment options for the permanent reduction of hair on the body. Using a specialized laser device, beams or intense pulses of light are directed at the skin. Using the melanin pigments of the hair as a target, the laser directs its light energy down the hair follicle, destroying it in the process. This makes the follicle unable to grow hair. Although this method is approved by the FDA, it can have a host of post-treatment after effects.
Swelling
Swelling is one of the most common after effects of laser hair removal. This swelling, known as perifollicular edema, usually goes away within 24 to 48 hours. Depending on the clinic where the procedure is performed, ice may be applied to the treatment to help reduce swelling. Anti-inflammatory creams may also be applied to the area.
Redness
Redness is also a common after effect of laser hair removal. Also known as erythema, redness occurs as the blood vessels near the surface widen to allow healing cells to the affected area. Redness usually subsides within 12 to 24 hours, according to the American Society for Dermatologic Surgery.
Pain
Pain can also be both a during treatment issue, as well as an after effect of laser hair removal. To help dull the pain of treatment, some treatment clinics will use a topical numbing agent before the treatment begins. For lingering pain after treatment, over-the-counter pain medications are often enough to help relieve the problem.
Blistering
Although not common, blistering can occur during a laser hair removal treatment. Blistering more commonly occurs with older lasers that do not use a cooling apparatus as part of the procedure, but according to the American Society for Dermatologic Surgery, can occur with all types of lasers. The risk of blisters is increased if you spend significant time in the sun or on a tanning bed before the procedure. Blisters can also occur if you spend significant time in the sun after the procedure has been completed.
Pigmentation
According to the Mayo Clinic, another rare side effect of laser hair removal is the darkening of certain patches of skin (hyperpigmentation) or the lightening of patches of skin (hypopigmentation). In most cases this is only temporary, but in very rare cases, the skin discoloration can become permanent.
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