ForumsTopics & Posts abou...Acne ScarsIs CO2 laser the mo... Notifications Clear all Unless you have severe, widespread, and scarring acne, The Regimen is normally my suggestion for the most effective acne treatment.My suggested acne treatment Learn The Regimen → Learn The Regimen → 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