Hi,
From the photo, you appear to have mild acne scars rather than open pores.
Fractional CO2 laser should work. Effectiveness may be enhanced with more aggressive treatment parameters albeit at the expense of perhaps more unwanted side-effects such as PIH.
Alternatives to consider are Fractional microneedle RF and fractional picosecond laser.
It is best you discuss with your preferred aesthetic doctor your expectations and ability to accept downtime for him/her to help devise an individualized treatment plan for you.
Hope this helps!
