Dear Robina
Thank you for your review; I am sorry you did not like the dye.
We do make sure on the product page to mention in the description the dye is not suitable for use directly on grey hairs; this is because it is pure Indigo leaf powder, which if used directly on grey hairs can go a blue/green tone.
For that reason we advise following a two-step process to get a black shade on greys - using either pure Henna, Chestnut or Dark Brown first to get a good warm colour on your greys, and then following up with an application of Indigo Black to get a strong black shade.
The dye does not contain ammonia - in the picture it shows 'No PPD, No Ammonia'.
Our dyes only contain organic plant leaf powders, with no added toxic chemical ingredients, and are certified by the Soil Association. I do apologise if there was any confusion.
With Kindest Regards
Rebecca