Board Thread:Episode Discussion/@comment-3125844-20141231205412/@comment-5083222-20150113134522

It would be relatively easy for Juliet to lose her Hexenbiest powers:

Nick's blood.

Of course there is a caveat: As Nick's blood removed Adalind's powers before, it may not work on her again as they can say one needs the blood of a different Grimm, that would be the solution