Board Thread:Q & A/@comment-4097293-20150226082755/@comment-82.21.236.214-20150525102113

I'm not sure where you are going with this @lurkenfrau but we already know you can't take on someone else's appearance without some of their hair. The writers have already established this fact. Elizabeth and Juliette took on Adalind's appearance, so there must be some of Adalind's hair in the potion.