It's a thin oil so you will need to spread around to avoid it going to waste. I rub in as best possible. It says it's a cream, but it is not. I do the entire shaft and just wait for the tissues to get the boost. You can literally feel it. Like its buzzing? Very pleasant and you get a good chubby to walk around with.
That "buzzing" and the "chubby" sounds like a topical vasodilator, not a topical DHT.