I have slightly dark olive skin tone and I have papular acne scars on my chin and nose. I've heard that injections can help, but recurrence or atrophy can happen. CO2 laser also seems risky in terms of permanent hyper/hypopigmentation. There is a relatively recent study which says using the "pinhole method" with the Er: YAG laser is a safe/effective procedure. Does this seem like a good treatment? Where can I find a dermatologist that has expertise/skill in this specific pinhole laser method?