Baking Soda and Gray Hair/Shampoos

Sorry if I'm repeating a question that was already answered but I'm new to this site and I don't know how to search for my answers.

Anyways, I noticed some people complaining about baking soda turning their hair gray?? I was wondering why does this happen and is it possible that it will happen to me if I use it? I'm not ready for gray hair yet, lol.

My hair is thick and very coarse, nappy.

Also what are some good sulfate free shampoos? I have V05 tea trea therapy and Suave.

TIA.

updated by @slim-thick: 01/13/15 09:39:03PM

dont use those

baking soda strips color treatted hairs color thats all

if you dye the dye jobs dont last as long

www.dreadlockshampoo.com is the best there is

theres dozens more in our shops

but those are salon brands designed to prevent dreading

i wouldnt use em ever

--
My new book Ban The Taboo Vol 1

Wow okay glad I asked, thanks and I'll check out the shop.