The Hide Herb (Originally Invisibility Herb, or Fading Jenny in the iOS/Android versions) is an item in Dragon Quest III.
The Hide Herb is an item that turns the party invisible temporarily. It can be purchased for 300 gold coins, and sold for 225. The Hero and his/her allies made use of them to sneak into Eginbear Castle to retrieve the Dry Vase, as one of the guards found them to be too lowly to enter.
The herbs can be purchased in:
They are also sometimes dropped by: