Keep buying this, it makes my hair the perfect shade of ash 

Very good mask. It left my hair nice an shiny and the color if fabulous.

I recently dyed my hair from blonde to dark brown and noticed it going slightly reddish/light after a few weeks. After trying multiple other brands/products which did not work, I decided to try this mask and it did not disappoint!! I purchased the 75ml to try it out and it covered my whole head of medium/long hair. It darkens my hair to a really nice ash brown colour and looks like I’ve just had it done at the salon. I left it on for 30 minutes and not only was the colour great, but it left my hair with a lovely shine and feeling very soft. I do have blonde pieces of hair at the front & due to other reviews mentioning about theirs turning a khaki green colour, I did try leave these pieces out ( a few were covered by the mask & it did turn them a greenish colour, but that’s my own fault for putting it on there). I have washed my hair three times since using it and the colour is still great!! I think this will be great to use inbetween salon visits. So impressed with this & I will be purchasing the large size. 

This worked well and conditioned my waist length long hair. I agree with another review about hair going khaki colour - my very lightened strands of hair at the front from getting baby lights have gone a khaki/green colour but my stylist can sort this (it’s maybe something she’s used or my hair is too light there) either way the benifits of using this out weight the less desirable colour. My purple toners don’t give as good an effect or tone my hairs brassyness as much as this. I’ll stick with this for now. Quick note to say I’ve tried a few of CRobin products now and haven’t been disappointed by any - great brand & well worth the price tag.

Followed instructions and product had no effect on my hair whatsoever. Do not waste your money