How often you should use dandruff shampoo varies from daily to a couple of times a week. Check the directions on the bottle.
When shampooing your hair, rub the shampoo into your scalp well. Leave the shampoo on your head for 5 minutes, or as directed, before you rinse.
Rinse thoroughly. Any leftover shampoo may irritate your skin.
Once your dandruff is under control, you may be able to use the dandruff shampoo less frequently.