SAND FILTER DEEP CLEANING QUESTION

I have never done a deep clean (honestly didn't know i should be every year) my question is what is the best way to do this ? i've seen some use a filter degreaser that they put in the skimmer basket then run it into the filter and let it sit an hour and then i have also seen people take the top off of the filter and put a hose in and let the water run until clear ----which is the best course of action and also I have the dryden media glass instead of sand in my filter