I ran a lab test with the Alphagels 20% DHT gel. I used 1 ml in the evening before the test, used 1 ml the morning of the test, and then went and had the test performed about 5 hours after the morning application. 317 ng/dL was the result. I was expecting higher, given I hit 340 ng/dL with scrotal test cream, so that is a little strange. I applied the Alphagel on my shoulders instead of my scrotum, so maybe that would explain it, as the shoulder skin is thicker. Still, the Alphagels product definitely contains DHT and definitely absorbs to a significant degree.
One complaint: this stuff causes significant skin irritation when you first apply it. It seems to dissipate over time, but initially it makes the entire area red and inflamed looking. This is not a skin-friendly product like an HRT base cream or equivalent. I guess the redness and burning sensation are reminders that you're dealing with a UGL product here.