Here’s my experience using apple cider vinegar on my natural gray hair to clarify the tone. It WORKED really well! I was actually pretty stunned by how well it worked. Not only did it lift and clarify the tone but it also softened and detangled it. On the con side, it does smell of vinegar! Keep your eyes closed and your head tilted back!! Also close your mouth so that ACV does not get into it! First I used a sulfate-free non-toning shampoo because I did not want to put any other toning product