There is no substantial evidence that claims apple cider vinegar can prevent hair loss. However, it can be used as a hair treatment for dandruff, according to Cathy Wong for About.com.
A solution made of apple cider vinegar and water restores the pH balance of the scalp and prevents the growth of malassezia furfur, a fungus linked to dandruff. To apply this treatment, mix 1/4 cup of water with 1/4 cup apple cider vinegar and apply the solution to the hair and scalp using a spray bottle, instructs Wong. Wrap a towel around the head and let it sit for 15 minutes to an hour. Then, rinse the hair. This treatment can be used once or twice a week to control dandruff.
Apple cider vinegar also helps with diabetes and blood sugar control, states WebMD. It has well-documented anti-glycemic properties. It works by partially preventing the digestion of starch, which helps lower blood sugar levels. It is not meant to be a cure for diabetes but a supplement to the diet. WebMD recommends patients focus on overall diet changes to help diabetes and blood pressure issues. Drinking apple cider vinegar with a starchy meal allows the starches to feed healthy bacteria in the gut. Unfiltered apple cider vinegar is recommended because it is full of probiotics and aids the immune system.