The first step to training your hair to be less oily is to gradually space out the days between washes. If you currently wash your hair four to five times per week, Healthline recommends cutting back to three shampoos per week to start. Once you've given yourself time to acclimate to the change, you can scale back to two washes per week. The tricky part is letting your hair reach the oily, uncomfortable stage during the initial transition period. You may need to apply more dry shampoo than usual or opt for a hat to cover your roots as you adjust to the training, per Southern Living.
While you're getting used to less frequent washes, take time to purge any existing hair care products that contain drying chemicals such as sulfates, advises Cosmopolitan. Once you've done the hard work of training your hair and you've adjusted to washing it less, make sure you're ready to maintain your scalp health with ease. Sulfate-free products will help you achieve this goal.