Get rid of patchy beard by letting it grow. One of the best ways to fix a patchy beard is actually just to let it grow. A lot of men simply give up way too fast, because they expect to get a full beard within four to six weeks.
The reality is though, that for most men, growing a full beard takes a lot longer. You should give your beard at least 90 to 120 days to grow. If you do that, most men will experience that their patchy beard starts to fill in.
So, don't throw in the towel too early. If your beard is still patchy after several months, you can look into other options such as the ones below.