does anyone have any tips on flattening out poofy pieces of hair bc i have this one hair that keeps poofing out in the back no matter how many times i spray it flat and its making my head look oval af

also
does anyone have any tips on flattening out poofy pieces of hair bc i have this one hair that keeps poofing out in the back no matter how many times i spray it flat and its making my head look oval af