ForumsAcne and its treatm...Scar treatmentsIs CO2 laser the mo... Notifications Clear all Is CO2 laser the most effective way to treat boxcar? Kevinhsie MemberMember2(@kevinhsie) Posted : 07/07/2023 12:52 am I am kinda under the impresssion that co2 is most effect at treating boxcar and icepick. But the side effect is also very bad. Am I wrong? Quote