Question on the laser for birthmark and acne scar; can Picosure remove them?

The color of your brown birthmark would definitely be helped by Picosure.  It will also help acne scarring.  I've tried CO2 fractional laser vs Picosure and Picosure is hands down more effective from my personal experience.  Picosure will not scab.  It has no down time...only 3 - 4 hours of redness.   You can use a mask but it it not necessary.  Good luck!

Picosure is the only laser which will help you treat pigmentation and stimulate new collagen and elastin production. I have successfully treated birthmarks and acne scars with Picosure with amazing results.There will be no scabbing or peeling with Pico and very minimal downtime with 3-4 hours of redness, but YOU CAN totally cover it with make up IMMEDIATELY after your treatment.  It is that amazing.  Regarding recommendation in your area, I suggest you visit the Picosure portal website and find an authorized provider near you that is experienced in PicoSure. Hope this helps. Best, Dr.Avaliani

Picosure is a 755nm picosecond red-light laser.  It is most useful for the treatment of tattoos and abnormal pigmentation.  This laser will not help a red birthmark and will only give minimal improvement in acne scars. 

Understanding all your questions, the very first step is to identify the type of brown birthmark. Brown birth marks maybe CALMs (macules), navevi, or moles, or a mixture of both known as naves spillus. Lasers are most effective for CALMS - I suggest you get a diagnosis BEFORE considering laser treatments. All the best, Dr Davin S. Lim. Brisbane. Australia.