If you exercise a lot, feel free to wash your hair once every 5-7 days instead. [4] X Research source

Once you’ve passed the week-long grace period, you’re free to wash your hair once every 7-14 days (like you usually would). [8] X Research source

You can even space out your washings by 3 weeks, if you want. [10] X Research source

You don’t have to do this oil treatment, but it’s a great way to nourish your hair.

Rinsing your hair is a quick and easy to clear away any build-up in your scalp.

Try not to massage and lather your hair with your palms—this could lead to your hair knotting.

Dipping your hair beneath the shower can help you spread the conditioner evenly to all of your hair. [18] X Research source

Feel free to skip this step if you’d rather use a leave-in conditioner.

You can find sulfate-free shampoo at most stores that sell beauty or personal care products. You can also find them online.

Natural oils like coconut, avocado, or olive are good candidates for this treatment.

You might get your hair wet with some water (liquid), apply some jojoba or grapeseed oil (oil), and then use a cream/butter styling product.

Co-washing isn’t the best option if your scalp is on the oily side. In that case, you’re better off including shampoo in your wash routine.