The effects differ, wildly in fact, dependent upon additives. Additives are just what you might expect; an ingredient added to the whole that changes the overall composition to some degree. Liquid curse is quite versatile in that manner. it can be altered by simply.. adding a physical ingredient, altering the ritual with particular wording or changing the chalk lines, or by some other magic before the curse takes hold.
It is possible to make things permanent, as was frequently done when used as a punishment. Though this poor lass here will only suffer for about a week at most. A way to deter future criminality from the cursed individual or the general public. I once believed that it was rather cruel and unusual. I still hold that belief in fact. However....
Well, one must sacrifice their moral high ground to achieve things they otherwise could never accomplish, do they not?