Measure all ingredients into a bowl and knead until mixedwell.
If making multiple colours, divide the dough and few drops to each portion.
Upto 6 months if stored in a air-tight container or Ziplock after every use.
Mixing the food colour with water before adding to the other ingredients helps with even colour. Glycerine adds a bit of stretch and shining. Add essential oils only if you want a scented dough.