The Balzo was a headdress worn by noblewomen of Italy in the 1530s. It was donut-shaped but appeared turban-like from the front, though it was generally worn further back from the forehead exposing the hair, unlike a period turban.
The headdress was a throwback to a larger rounded headdress from the 15th century in Italy that covered the hair of the wearer. Then the hairline was often plucked. Though mostly known as a woman's headdress, there is evidence that men also wore a form of the balzo.
Profile Portrait of a Lady, c.1410 portrait of a woman wearing an "early balzo" with a plucked forehead
Francesco Francia attributed - likely Isabella d'Este in 1511
Two women and a man wearing a balzo, showing the differences in style