What you will need
Carving knife or exacto knife
This purple round soap is a commercial soap in Japan.
Master-brand soap. Peony floral scent.
Diameter : 7cm(2-3/4 in)
Thickness : 3.3 cm(1-1/4 in) ,weight : 95g
Green recrangular soaps are store-bought soap.
Dimensions : 8 cm(3-1/4") x 5 cm(2") x 2.5cm(1")
You can use white soap,too.
Paint the soap using food coloring with water.