I am 57 years old and have deep smoker's lines I want to get rid of. They have the appearance of "scars" by now. I have never smoked and being light skinned, I have always been careful with the sun. I am considering Fraxel laser but I'm hesitant … 69-70% satisfaction with this treatment seems a little unsafe and I would like to know which factors might affect the results of the treatment and contribute to a less than optimal result. Thank you!