According to an article on [Living Gorgeous](https://www.livinggorgeous.com/how-long-to-leave-purple-shampoo-for-orange-hair-in/), you should not leave purple shampoo for orange hair in for longer than **five minutes**, depending on the product you choose. If you are aiming to simply rid your blonde of unwanted yellow or orange undertones, be sure to leave the shampoo in for less than ten minutes, otherwise, you may end up with silver, lilac, or full-blown purple locks .