Positives: Good result regarding color and coverage. It does not cause irritation or itching. Negatives: The application is not easy at all! It cannot be applied precisely because it really splatters everything and leaves stains. It also dries the hair a lot

I used it to cover gaps. It covered the gaps, it essentially dyes the scalp. It caused me significant irritation and made the thinning problem worse. So be careful to use it only for what it is really meant for

I think it is the best for covering whites (on black hair!). Of course, you need to be careful not to forget and touch your hair, but the product does what it promises!

The black one is very good. My mother has been using it for years, and she doesn't dye her hair. It is a very good solution for gray hair before going out, so that it looks quite black with some gray highlights. On the contrary, the blonde one I got for myself didn't do anything at all, whether I applied it or not, no difference.