Craft Ideas

Invisible Ink

• 2 tbsp. cobalt chloride
• 2 tsp. white dextrin
• 3 1/2 tbsp. glycerine

Directions:

Combine all ingredients in a small pan. 

Cook over low heat and stir constantly until well blended. 

Cool completely. 

Store in a clean air-tight jar. 

Ink is pale pink on colored paper. 

Expose to heat or light bulb and writing turns blue. 

Note:  Cobalt chloride and dextrin may be purchased from a chemical supply house and glycerine from a drug store.