Even if you have just a few greys like I do, give this one a miss. It didn't cover any grey at all... even immediately after application. I'm a stickler for directions so I followed them exactly and kept the product on for the max time suggested. Still, it was a total failure and a waste of my money. I feel misled because the package specifically says 'blends away greys'. If you need NO grey coverage and like a blush of shine I'd say try it.

I miss demi-permanents with a little ammonia - it made the colour adhere to the hair.

This company is also notorious for animal testing.

Overall decent color coverage. Not so decent on grey coverage.
If you don't have grey this is awesome. I love the color (dark brown). But, disappointed with grey coverage as it stated on the box that it would cover greys on someone with upto 70% grey in their hair.