ACV, Rinses???

I'm sure that ACV stands for something I should definitely know, but I can't figure it out!  I read something about clarifying rinses and stuff after extended use of "cones" so I was just wondering...thanks!

ugh, I HATE vinegar, lolol.  You know what's funny? When I was 14 years old, I worked in a bakery and the owners were really old-fashioned (cheap) so refused to use any windex or anything to clean the glass cases.  Instead, we had to use pure vinegar.  Anyway, I used to go home stinking of vinegar, and to this day whenever I smell it, I get really nauseas. 
So we just moved into a new place (my family and I), and I bought a bottle of Febreeze (you know, the spray for fabrics to get the smells out) to get the smell of smoke out from the previous people who lived here, and went nuts spraying it all over my carpet.  Anyway, after a minute or two of spraying, I didn't smell the pretty scent of febreeze.  Then, I got this overwhelming whiff of vinegar!!  My carpet was SOAKED in vinegar.  HAHAHA, I flipped out.  My mom had filled the empty bottle of febreeze with vinegar for cleaning.  I called her and was like, "You know, Mom, you should really label bottles when you change their contents.  She was cracking up. 
So yeah, that's my story with vinegar.  LOL, at least I can laugh about it!

So does it really matter which kind you use? I made up a little spray bottle with a bit of white vineger and a lot of water to spray on my hair after conditioner and then rinse. Would apple cider vinegar work any better?