According to a celebrity colorist, the best purple hair dyes for dark hair will be deeper purple colors that don’t require bleaching your hair first.

The best shampoos for purple hair are sulfate-free and color-safe to maintain vibrancy and some work specifically to moisturize and strengthen treated hair.

Hydrangeas turn rich purple tone by adding kitchen leftover to soil - 'best results' Altering the pH levels of soil has been deemed a surefire method for obtaining deep purple hydrangeas.