How do I increase beard density?

Is there any real way for one to increase the density (aka thickness) of beard in mid 20s? I always have had a shitty patchy beard, as far as I know if you don't have hair follicles present already, hair growing products won't magically grow hair anywhere.

Would Minoxidil help? As far as I know it only helps in case there is existing hair loss and reverts that, it does not grow new hair from nowhere.