It is difficult for any dermatologist to give an opinion in your case - without taking history and seeing photos. Especially pre and post treatment photos. Fractional laser therapy is done once a month for few months. Results vary . Depth of scars on face also vary. You may get good results in superficial scars and lesser results in deeper scars. You may need additional sessions. Quick results are not possible while treating acne scars. It takes months. The skin treated by laser has to heal well in about 1 month. I suggest that you schedule an appointment with your treating dermatologist. Make a list of your questions, doubts and concerns. Discuss with your dermatologist for a better understanding and realistic expectations.