There is some debate on whether or not simply a rinse with apple cider vinegar, better known as A.C.V. can clarify the hair, but it does help bring the hair back into balance after an alkaline solution has come into contact with the hair and will shut the cuticle back down.
Repeated use of A.C.V. rinses can be drying, so limit use to once or twice per month at most:
1 tablespoon apple cider vinegar
1 cup warm water
Pour the mixture over the hair after cleansing (do not rinse out), then condition as usual. Any lingering smell will dissipate as the hair dries.
While it is also a great toner for the skin, make sure not to get into the eyes, or god forbid up your nose!!
Citric Acid Rinse
This rinse will help remove hard water residue, helps remove chlorine odor and discoloration from swimming in chlorinated swimming pools, helps remove soap scum (better than a vinegar rinse with soap or shampoo bars in my opinion).
1/4 teaspoon citric acid (powder, crystals) per cup water - preferably distilled water. Pour on damp hair, leave on for at least a minute, then rinse.
I use a.c.v. at home and citric acid at the salon. Why you ask, well cuz the girls would run me out of the salon if I made it smell like easter eggs.
A.C.V. is my go to for " funky for no reason" hair days. Usually does the trick.
I will often add a splash to the last of the bottle of my One Conditioner. Enough to liquefy it and get it all out. Brings that cuticle right down over all that moisture. Shiny bouncy curls.
Michigan is known for it's hard water so an a.c.v. will remove buildup without stripping the hair.
Using after a color will help lock it in without all of the silicones.