"The depiction of Jesus in pictorial form was controversial in the early Church. The depiction of him in art took several centuries to reach a conventional standardized form for his physical appearance, which has subsequently remained largely stable since that time. Most images of Jesus have in common a number of traits which are now almost universally associated with Jesus, although variants are seen.
The conventional image of a fully bearded Jesus with long hair emerged around AD 300, but did not become established until the 6th century in Eastern Christianity, and much later in the West. It has always had the advantage of being easily recognizable, and distinguishing Jesus from other figures shown around him, which the use of a cruciform halo also achieves. Earlier images were much more varied." - (en.wikipedia.org 02.10.2021)
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