GENERAL INFORMATION AND USE
Alum is used in the fabric marbling process as a pre-mordant to make marbling paints "stick", and is also used as one of the safer chemicals to pre-mordant fabric in preparation for natural dyeing.
DIRECTIONS FOR USE
Dissolve 2 teaspoons alum into 1 gallon of water to make a solution for fabric to be marbled. Dissolve 2 teaspoons alum in 1 quart of water to make a solution for paper to be marbled.
Also used in natural dyeing.
ALERT: Be careful not to leave on the fabric too long or get hot as that combination can really damage the fabric.