It takes quite a while waiting on the beginner's beard to grow thick especially if a person is not the hairy type.
A very successful method to get hair to grow in a skin area is to brooze it. When this happens to that area, the body urgently sends blood to that particular area to assure quick recovery. During the recovery process, hair follicles are commanded to grow hair out for the protection of the broozed area from things like dirt, toxins, germs etc.
Usually the area heals within few days depending on the health of the individual.
Shaving a clean skin ussually attracts hair to grow in an area where hair never existed before and by repeating that, you get to grow a fuller and thicker beard.