Crossword Puzzle Post-shampoo activity

Clue: Post-shampoo activity

Postgame activity (RECAP with 5 letters)
Post-New Year's activity (DIETING with 7 letters)
Post-shampoo application, sometimes (HAIRCONDITIONER with 15 letters)
Post-Halloween activity? (TREATASSESSMENT with 15 letters)
Post-retirement activity? (REM with 3 letters)
Posterizing activity (DUNK with 4 letters)
Post-spat activity (MAKINGUP with 8 letters)
Post office activity, or a hint to this puzzle's theme (LETTERSORTING with 13 letters)
Postal activity (ROUTING with 7 letters)
Activity in a postâ€“W.W. I free city? (FOLKDANZIG with 10 letters)