If you tend to have brassy hair, look for shampoos that have blue undertones in them. [5] X Expert Source Jamie BushmanMaster Hair Stylist Expert Interview. 15 September 2021. You can find purple shampoo at most stores that sell beauty products.

For some products, you can keep the shampoo in for as long as 10 minutes. Double-check the label just to be safe![7] X Research source

You can find purple conditioners at most beauty supply shops. Some brands refer to these conditioners as “brightening treatments. ”[10] X Expert Source Jamie BushmanMaster Hair Stylist Expert Interview. 15 September 2021. [11] X Research source

Some products may only need to be left on for 2 minutes, while some may need to be left on for 10 minutes.

For instance, if your hair looks really brassy, you may want to use purple shampoo every other shower. You can use a traditional or clarifying shampoo on the days you aren’t using a purple toning product. Blue shampoo can also help keep your hair looking ashy. [16] X Research source You should only shampoo every other day, at most, so you should be using the purple or blue product about once a week to start. [17] X Expert Source Jamie BushmanMaster Hair Stylist Expert Interview. 15 September 2021.

You can find clarifying shampoo at most beauty stores.

You can find this product at most beauty supply stores.

A water filter is not the same as a water softener. A filtered showerhead will only improve the water quality in your shower, but not the rest of your home.

If you prefer to dye your hair at home, you’ll still want to touch up your hair around this same time frame.