I used 30 volume developer with powder bleach (bblonde) on my roots and then applied purple shampoo for 15 minutes but it didn't take! I'm so confused HELP : r/haircoloring
How to Use Purple Shampoo: 14 Steps (with Pictures) - wikiHow
If You Color Your Hair Blonde, You Need This Purple Shampoo
I LEFT PURPLE SHAMPOO IN MY HAIR FOR AN HOUR.. *toning my hair* - YouTube