Source: Dungeon Master's Guide
Wondrous item, rare (requires attunement)
While wearing this belt, you gain the following benefits:
In addition, while attuned to the belt, you have a 50 percent chance each day at dawn of growing a full beard if you're capable of growing one, or a visibly thicker beard if you already have one.
If you aren't a dwarf, you gain the following additional benefits while wearing the belt: