Tip Tuesday! Purple Shampoo Hack Feb, 06 Tip Tuesday!! Purple Shampoo questions Answered! A few quick steps for you to follow when washing your extensions with purple shampoo. 1- Dilute the purple #shampoo with equal parts of your regular shampoo. 2- Spread both through your hands and fingertips so it can be equally distributed to the extensions. 3- Lather and cover the hair with Shampoo from top to ends. 4- Double check to be sure the shampoo is distributed evenly throughout the hair. 5- Wait 1-2 mins and rinse completely. 6- Repeat if needed.