Some normal side effects may occur after laser hair removal treatments, including itching, redness, and swelling around the treatment area. These side effects rarely last more than three days. Some level of pain should also be expected during treatments. Numbing creams are available at most clinics, sometimes for an additional cost. However, some numbing creams are available over the counter. Use of strong numbing creams over large skin areas being treated at one time must be avoided, as this has seriously harmed, and even killed patients.[10] Typically, the cream should be applied about 30 minutes before the procedure. Icing the area after the treatment helps relieve the side effects faster.
Unwanted side effects such as hypo- or hyper-pigmentation or, in extreme cases, burning of the skin call for an adjustment in laser settings. Risks include the chance of burning the skin or discoloration of the skin, hypopigmentation (white spots), flare of acne, swelling around the hair follicle, scab formation, purpura, and infection. These risks can be reduced by treatment with an appropriate laser type used at appropriate settings for the individual's skin type and treatment area.
Some patients may show side effects from an allergy to either the hair removal gel used with certain laser types or to a numbing cream. A physician should be consulted if an allergic reaction presents itself after the treatment.
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