I have a patchy beard but at that part I have baby hairs but they are very light to be visible so what should I do to have an fully grown beard please help regarding this.

Question

Taking supplements like iron; vitamin B, D, and E; magnesium; zinc and copper can all increase hair thickness. Check with your doctor before taking any over the counter supplements. There are even some out there that are designed specifically for beard growth, but since supplements are a highly unregulated industry, be prepared that they might not work.
If you can’t justify waiting for all the hair to grow out, and you need to fix glaring patches, the only quick way is to trim the entire beard down to the length of the lowest patch. It will prevent your beard from growing out quickly, but it will help to improve the hair growth consistency and density.

Potnuru Srinivaasa Sudhakar · Accepted Answer

Taking supplements like iron; vitamin B, D, and E; magnesium; zinc and copper can all increase hair thickness. Check with your doctor before taking any over the counter supplements. There are even some out there that are designed specifically for beard growth, but since supplements are a highly unregulated industry, be prepared that they might not work.
If you can’t justify waiting for all the hair to grow out, and you need to fix glaring patches, the only quick way is to trim the entire beard down to the length of the lowest patch. It will prevent your beard from growing out quickly, but it will help to improve the hair growth consistency and density.