I haven't used their product but I'll usually do something to that effect: After I finish hydropumping, I'll dry off and sit down with my far infrared heat pad covering my dick for 30-60 minutes then I'll switch on some porn, get a boner and smear it with a homemade "aphrodisiac cream" that I created from the most well known aphrodisiac essential oils, coconut oil and vegetable milk. The smell is amazing and the vasodilation is epic, making my cock rock hard and looking its biggest ever. I'll sometimes edge for a while but usually I'll do some erect kegelling for about 30 minutes until I can feel it stretch which makes it look and feel even bigger.
I can't quantify how much it helps but it's fun, satisfying and motivating to see my cock looking so much bigger than normal.