Prepare 3 tablespoons of Prep Sol in a cup and fill it with warm or room temperature water. The more you heat the water, the better is your preparation. After you prepare it add 20 drops of Pureliquor to the PrepSol that also has 40 mg of Vitamin C added to it. Some PrepSol also has a 1,200 milligram dosage strength as an added power. Add this mixture to each nostril, back left nostril first and then use your right hand to tilt your head back slightly so that more liquid will be able to flow into your sinus area effectively while blocking out the cold air. This is called sinus cleansing mode.