What did Jesus look like? Like a medieval European potentate with long hair? Neither Jewish nor Gentile men sported hippie hairstyles. Here is what 1 Corinthians 11:14 says: Does not even nature itself teach you that if a man has long hair, it is a dishonor to him?
Wikipedia has a a comprehensive analysis of this subject, and a must watch video model of what Jesus might have actually looked like: