Deshret was the Red Crown of Lower Egypt. It was a red bowl shaped with a protruding curlicue. When combined with the Hedjet of Upper Egypt, it forms the Pschent, in ancient Egyptian called the sekhem
Vase fragment with earliest known depiction of a Red Crown. Naqada IIA, circa 3600 BC, Ashmolean Museum.
Limestone head of an early Egyptian king, The Petrie Museum. Modern scholars have considered the stone bust to depict an Early Dynastic or Old Kingdom pharaoh, wearing the Deshret crown..
Rosetta Stone usage of Red Crown, not as preposition: part of Pschent (Double Crown), and part of "Taui", the name for Upper and Lower Egypt (used combined with a Crossroads (hieroglyph))
The khepresh was an ancient Egyptian royal headdress. It is also known as the blue crown or war crown. New Kingdom pharaohs are often depicted wearing it in battle, but it was also frequently worn in
Deshret
…Atef – Hedjet Crown with feathers identified with Osiris Khepresh – Blue or War Crown also called Royal Crown Pschent - combined White Crown (Hedjet) of Upper Egypt with Red Crown (Deshret) of Lower Egypt…