Gel taking longer to make changes is a common misconception. As far as I know, there isn't really much to know about gel specifically, other than absorption tips (ie. Always shower first.. Moisturize the area before you put the gel on.. Etc..) how much T you actually end up getting from the gel all depends on how well your skin absorbs it. The dosages are based on how much people generally absorb from that amount, but of course everyone is different so some will absorb a bit more and some will absorb less. People who don't absorb it very well end up needing either a higher dose or sticking to injections for simplicity. But if you were hoping for slower changes anyway you might not care too much about the absorption :) and of course your Dr will monitor your levels and adjust as needed.