Draw with SoaPen on your DRY hands, use a little water to wet the drawing, then rub your hands together and eventually wash off the foamy lather. SoaPen is cost effective. 10 ml of SoaPen will give you 60 hand washes whereas 10 ml of any other liquid soap will give you 9 hand washes. It ensure no mess application since you only draw on your dry hands It is compact and easy to carry, great for traveling purposes. SoaPen gives best results when drawings are washed within 2 mins of application.