I PUT BLUE DYE IN MY HAIR BUT IT CAME OUT GREEN. WHY?

Since Manic Panic® is a direct deposit dye, it directly deposits color on the base color you have (which is why your base color is so important). Your base color will directly interact with the color applied on top of it.
If you apply blue pigment on top of a yellow-toned blonde, the results can veer more toward teal or green (since blue and yellow make green). The whiter the hair, the truer the color tone. You can often counteract this by adding in a small amount of a deep Purple or Violet-blue shade to your mix (since those colors cancel out yellow). As a visual aid, we included swatches on all of our product pages to show you how the color is most likely to appear on your current hair level so you can plan for the mix you’ll need.
WATCH A VIDEO ON PREVENTING BLUE FROM GOING GREEN!