I'm not happy with the result, what can I do?

I don’t like the colour, can I dye my hair again?

My greys aren't fully covered. What can I do?

Why didn't my hair take colour?

My hair colour has become too dark. What can I do?

My hair has orange tones after dyeing. What can I do?

My hair colour has become too bright. How can I tone it down?

Why do I have an uneven result after dyeing?

I have leftover hair dye. Can I use this again later?

How do I clean my tint brush and mixing bowl?

How do I get hair dye stains off of my skin?

My hair is still staining while washing. Is that normal?

How do I make sure that the colour stays beautiful as long as possible?