Purple shampoo is a popular product for people with blonde hair (especially those with dyed blonde hair) as it neutralizes brassy and yellow tones. However, a lesser-known fact is that the shampoo ...

My first—and most important—order of business? Shampoo. Luckily, this Rootstim Biotin and Rosemary Hair Growth option is on sale for less than $25, just in time for my hair care overhaul.

If you find the purple shampoo drying on your strands, consider adding a hydrating deep-conditioning mask to your hair care routine.