ACV counteracts the high pH of the baking soda. The baking soda dries out your hair; the ACV brings it back to a balanced pH and makes it soft again.
It's not necessary to use ACV every time you do the baking soda wash, but you should do it once it awhile just to make sure the baking soda isn't leaving any buildup that could be caustic.
Is there a way to get rid of caustic without the ACV?
Fresh lime juice instead of ACV is an awesome treat once in awhile, especially if you add some salt to your baking soda. :-) I find it's gentler on my scalp.
And if you have a shot of tequila with it, you could be a human margarita!
I agree with Knottys. Gotta go LIGHT on the oils, vinegar, baking soda ...you want them to enhance, not burn your skin/scalp.
Just joined tis forum as my scalp is crying out for help. I used to have dreads but had to cut them off due to sore itchy scalp. tried re growing them... same problem, this time was using nizoral shampoo having to wash dreads loads making them a fluffy mess and still with the same problem. At which point saw a "specialist" who threatened me with baldness, and told me the only way to cure the problem was to cut my locks and treat the problem. So yet again the locks came off. Was told I had Sebhorreic Eczema. Whilst problem was controlable was told it will never go away. I realised I would find it very hard to not have my locks for the rest of my days. So here is where I stand, starting to not wash my hair head itching crusting up and being sore. Come across this b/s avc method and seeing a possible solution. could someone spell out exactly how much to use. as if i get it wrong am in a scalp snowstorm :}