A man was slashed across the face in Selsey on Sunday November 4.
Police are appealing for witnesses following the incident which happened during a dispute in the early hours of the morning.
The 32-year-old victim was attacked in Landseer Drive along with his friend, aged 29, who was punched in the face at about 12.30am following an argument with three men.
The victim was taken to St Richard’s Hospital, Chichester, and moved to the Queen Alexandra Hospital in Portsmouth for further treatment.
Detective Constable Andrea Watts said: “The victim has serious facial injuries which are likely to cause permanent scarring. We are appealing for witnesses to the incident and anyone who has information should contact Sussex Police on 101 quoting serial 128 of 4/11.”
Two men aged 28 and 26 both from Selsey have been arrested on suspicion of causing grevious bodily harm and released on bail until.