Hello Sam,
We are very sorry to hear that this has happened to you after using the Manic Panic hair dyes, we appreciate that this must be very frustrating.
We can confirm that our hair dyes are semi-permanent, however, deeply pigmented tones such as After Midnight can create long-lasting results. This information is provided on the product page for this colour, described as 'Bolder for Longer' and that it can last for 6-8+ weeks.
Blue hair dye is notoriously difficult to remove, both semi-permanent and permanent, however, our colours will eventually fade as they do not contain any permanent ingredients or properties.
Again, we are very sorry that this has occurred. Our team would be more than happy to learn more about your experience using the Manic Panic hair dyes; you can contact our customer services at sales@manic-panic.co.uk.
We hope that we can help rectify this issue as best as we can and we apologise for any inconvenience.
Kindest regards,
Manic Panic UK