Please share with me the ideal diffusing techinique. I want to start diffusing to add volume. Hot or cold air? Scrunch or no scrunch? Towel dry beforehand or not? Diffuse until completely dry or not quite? upside down head or not? Product? HELLLPPPP! so far, when I diffuse, it just seems to take all the shape out of my curl. It looks ok for about a minute afterward but then it all jusf falls apart. Thanks!