Why melasma is keep coming back after picosure treatment . My skin gets very clear for 2-3 weeks then melasma start coming on the surface. Don't know how many sitting I need . Am I paying 600dollars only for 2-3 weeks clear face. Will it ever stop coming back ??? I hope I am not wasting my money . I was so happy 2 weeks ago , now I am sad again cuz results stays only for few days. Anyone can help or knows about this issue?? Any experience ??? Please share