Devils ritual oil

Devils oil is made with the focus of causing strife, starting slowly and gradually building in strength until it reaches its completion. 

This is for those that want to hex and have some control over the severity, as it gradually increased until it is removed or the final outcome is reached. Think of this as a slow progressing DUME. This is good for when you want the curse to creep up on the target and take hold of them in a way that is not as easily noticed. A way that when they look back for events that could be the source they only find a diminishing trail leading to some insignificant and easily overlooked thing. 

Use on poppets, effigies, pictures, writs, petitions, candles, and any other way you deem acceptable.

If you intend to remove the curse after it has reached the level you desire, then retain the items and spell remnants to work the un-hexing and spell breaking upon.