Here's what I did... I bought 2 bottles of Androsol, 2 bottles of Nandrosol, then mixed them so that all 4 bottles contained 50% Androsol, 50% Nandrosol. I then applied 70 sprays twice daily (140 sprays per day) to my skin (arms, shoulders, chest, back, legs). At that rate, 4 bottles is about...