they make the patches i believe in a 2 1/2 and 5 mg dosage they are suppose to give you a even dosage through out the day. one type of patch goes on the bottum of your nut sack and the other you can put on any hairless area. they also make a gel that goes on your shoulders but you have to make sure it does not get on the ladies. the best way is take shots.
I posted a thread on Testosterone therapy. It was entitled, "A long but interesting read on Testosterone therapy." I posted it about 2 weeks ago. Look it up. It compares Test Cyp injections, Androderm patches, and Halotestin. Interesting artcle.
Unless you're asking for your dad or grandpa forget it. You are too young to see any results from this. It is meant for people with depleted test levels (ie. 40year olds and up). That dosage will not do anything for you at all. If it's for your father or somebody older then yes, they will get results from it.