I started growing out my grey two years ago and have been using Artic Fox temporary dye in a purple shade to help with the transition when I need to boost my confidence. It washes out after 8 washes so it doesn't give me a demarcation line.
I then stupidly used some (what I thought) was temporary dye from Amazon (single sachet) last summer and have had to start all over again. It must have been a semi-permanent colour because I was left with a regrowth line.
So fast forward to now, I have about 3 inches of grey regrowth but I'm out of the artic fox colour I normally use.
I have been recommended to try Revlon Nutri Color Creme in 200 which seems to be like a tinted conditioner. I don't mind if it gives crap coverage as long as it doesn't change the underneath colour of the hair. I can't find manufacturer information that says it's temporary. Before I take the plunge, I thought I'd ask on here. Anyone used it before?