The High John Sachet Powder is commonly used in spells for good luck, prosperity or protection. This sachet powder is often used in combination with the making of gris-gris bags or other private rituals. The use of sprinkling and blowing powders, typically called sachet powders has been a tried and true part of Hoodoo practice for a very long time.
It is very likely that the use of such powders combines both African and European magical traditions. Throughout the 19th and 20th centuries, there have been several different ways these powders have been used, and they seem to derive from a blend of African and European-American folk-magic.