The best method to remove tattoo is q switched laser.It acts by targeting the tattoo ink and destroy it gradually.The time required and number if sessions depends on color and depth of pigment.Cost varies from 1500 to 6000 per session depending on size if your tattoo. Another method is cosmetic surgery if tattoo is small and cost of surgery again depends on size and type of surgery. Kindly tell me above details or send picture if feasible to help me guide you better.