I don't rinse after my ACV and I've not had a problem. I cleanse with baking soda and condish, rinse, put in my RO condish, rinse, then pour the ACV solution over my head. I do not rinse after that. I go straight for my LI condish and stylers.
Sulfate/non-water-soluble silicone free since 8/16/10
Med-coarse, normal porosity, low elasticity
Dye-free since 11/2010