The use of apple cider vinegar (ACV) for dandruff treatment lacks scientific backing, although anecdotal evidence suggests it may benefit the scalp in various ways.
These include maintaining pH balance, encouraging dead skin cell shedding, and reducing fungal growth on the scalp. However, there is no conclusive research supporting its effectiveness for dandruff.
For those interested in trying ACV, a diluted solution (two parts ACV to one part water) can be applied to the scalp for 15 minutes, rinsed with warm water, and repeated twice a week. Consult a doctor before use and discontinue if any irritation occurs.