Answers to your questions...
What are the risks and complications associated with laser hair removal?
Although complications are rare, some of the temporary complications may include pain, swelling, redness and blisters, and permanent complications may include scarring and skin discoloration. One of the complications that has surfaced recently is related to overuse of numbing cream, or lidocaine toxicity.
Other risks in laser hair removal can include either darkening or lightening of skin, swelling, inflammation, and infected hair follicles. Laser hair removal is particularly problematic for those with tans or darker skin colors