Definitely! For best results, use your scalp treatment solution daily. If your scalp becomes too dry or irritated, try using it just once a day for a couple of weeks. Once your scalp gets accustomed to your new routine, you can use the scalp treatment solution twice a day.
BTW - You can wash your hair every day, every other day, or every three days. This will depend on the oiliness of hair and your personal preference.