I've been using tops of feet, inside of forearms/wrist, neck, groin area from hip to hip for androgel application....all places where there are plenty of veins/arteries and thin skin (just posted this in anabolics I think lol). think about where they cardiac cath you.....groin, neck. and its pretty obvious the tops of feet/wrist and inside of the forearms are veiny and thinly skinned. also the insides of the elbow joint, and back of knees like antihero said. I just apply dermacrine to my chest, upper arms, shoulders since those areas are available after androgel application. and yes, its a major PITA to apply androgel AND dermacrine EVERY DAY....