Your edit is way naughtier than my suggestion. 
I purposely don't clean my ears before certain concerts. Disgusting, admittedly as was a strange thread on BG about Q-Tips n such. Anyhow, Praise BE, it helps and semi-often after some, esp if the show is in small venue or aucoustic metal shed, essentially, like good SA places and used to be in Austin. I will find wax issue "solved", less ringing, in morning tho quick to not show or have found. Ha. Cause disgusting but effective and I'm, secretly, proud. Self-help medicine n better than evil q-tips or those scam ear candles because also see the bands.