Hello, can laser remove a brown spot that i have on my legs from when i got a motorcycle muffler burn three years ago?

Hard to tell: It depends on the nature of the spot. The best way to address it would be to see a dermatologist who can evaluate the spot and give your his expert advice.

Laser tx: Laser therapy is used for multiple skin problems. For your specific problem you would need to see a dermatologist that performs that procedure and look at the scar and explain what is the probability of removing it.