A man needed treatment in hospital after ammonia liquid was thrown in his face at a petrol station, Lancashire Police said.
Officers were called to the Sainsbury’s garage forecourt on Lancaster Road in Morecambe following the attack on the 24-year-old victim.
An ambulance was called and he was taken to the Royal Lancaster Infirmary to be treated.
He was later released from hospital but is receiving ongoing treatment.
The police helicopter was also sent out to trace a vehicle involved in the incident.
It happened at around 1.20pm on Thursday and the aircraft could be seen circling overhead for at least half an hour.
Ammonia is a gas often used in fertiliser and cleaning products.
In liquid form, it can be corrosive on contact with the skin.
Anyone who witnessed the incident is urged to contact Lancashire Police on 101.
Johnny Reid, aged 24, of White Lund Road, Morecambe, has been charged with section 18 attempting grievous bodily harm with intent.
He appeared at Lancaster Magistrates’ Court on Tuesday and will appear at Preston Crown Court on May 27.