Applied cold in the form of a poultice for 30 minutes, this mixture gives a beautiful medium blond. When this rastik is applied with prolonged heating by means of a heating helmet of adequate design, the following results are obtained: After 30 minutes at 60'C After 45 minutes at 60'C After 1 hour at 60'C This example shows the diversity of results and their modification, according to certain details of the technique of application.