Famous Purple Shampoo On Dark Hair Ideas. At first, purple shampoo seemed like a miracle solution to the problem of blonde hair that is prone to brassy tones. Start by mixing a small amount of purple dye with your regular black hair dye.

Web here are a few tips to help you get the results you want: If you’re looking to use purple shampoo to lighten your black hair, it is important to note that it will not produce dramatic results. Therefore, purple cancels out any unwanted yellow tones to make the perfect blonde. more from elle can.