My son has a port wine birthmark, he had several laser treatments, he is having another procedure?can you please let me know how effective is Imquimod for port wine birthmark after laser treatment. my son is having this procedure in 9 days.i really like to hear from you ASAP.My son is 21 the portwine birthmark on his left side on his face from the cheek and upward to part of his forehead.