I used LTs Smokey Teal during lockdown on my 50% grey har. Was pretty perfect but washed out all too quickly so my dumb*** bumped up to Cerulean Sea. Enter glowing teal head it was cool but I felt a little uh conspicuous for quite awhile like no real washout. Long story longer my greys faded to a greenish hue that I have been trying to tone. Tried Slate Grey but washed out too readily for the price so I am now using a combo of conditioner, Eclipse Black and strange as it sounds a dab of Adore 121 Jet Black to counteract the purple base of Eclipse. This $22 diy color conditioner combo lasts months; I also add Eclipse Black to my shampoo and conditioner. My greys are now a dark gunmetal with a slight metallic tint. Loves it.