Well I have only worked with mixed feelings

Good be behavior proteins, smoothing spray

And love both

I have naturally dark brown/ grey hair that’s heavily highlighted to camouflage my greys. The front portions of my highlights always pull warmer, and even after salon toning it fades back into the brass zone. A few drops of Mixed Feelings in my weekly deep conditioning treatment is keeping the orange/ yellow at bay and noticeably softened my blonde into a cool ash blonde. 10/10.

This product really cut out the yellow in my blonde. Well worth the spend.

I've been a light, bleached blonde for years and my hair has always been quick to get brassy. I'm no stranger to purple shampoos. But they always seem to dry my hair out, and more often than I'd like they'd leave me with purple tinges I couldn't see until my hair was dry. These drops are SO EASY to mix with any other products you throw in your hair (I mix with creams or oils depending on my mood, both work great), and I love that you can customize how much pigment you want on that particular day, or reapply if you need a little more brass-banishing magic. It's especially convenient for traveling because it takes up so little space while packing a huge punch. It's way cheaper than continuously buying expensive purple shampoo too!!