Acv rinse does it straighten hair?

Hello everyone thank you with all the help so far!! Recently I was talking to my grandma and she said she used apple cider vinegar when she was a kid to condition and straighten her hair. Which is not good for dreadlocks....(i am just starting my dreadlock journey and I have done the Acv rinse a couple times and I thought it helped so I am confused)
updated by @tristan-robertson: 01/13/15 09:42:15PM

acv should be used after bs only abd very very weak untill maty-ure once mature u can use it stronferr but yea if u use it at the strength u use it when mature your not gonna dread easy

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My new book Ban The Taboo Vol 1

I use a tablespoon of it in a ketchup squirter bottle that you could get at like Walmart or Walgreens places like that.... Is that to much right now?

The basic recipe for brand new almost dreads is about a cap full in 4 cups of water. A bit more if your having a lot of itching after a baking soda wash.