Push HARD on the bottom. You don’t have to wait for the drops to fall. You can push++
I bought the Matrix brass off (blue)mask left it on for ten
Color Wow Color Security Shampoo; Wella Invigo Brilliance++
I don’t recommend Overtone at all. It’s got weird pigments that tend to stain and that ++
Wella (reddish bottle at ulta)
If you want to keep it bright white, supplement your purple shampoo with something that ++