The incident occurred late Saturday in Kot Addu tehsil of Muzaffargarh district, some 400 kilometres from Lahore.
Victim Gulnaz's husband Fahim Ahmed had an argument with her over a trivial domestic issue. He first beat her with the assistance of his father and then poured acid down her throat, police said.
Following the incident, she was immediately rushed to a nearby hospital in Multan, where her condition is stated to be very critical.
Gulnaz was married to Faheem a few months ago and the couple often picked arguments over domestic problems which generally resulted in quarrels, a senior police officer Abdul Rehman Asim said.
"We have registered a case under Section 7 of the Anti-Terrorism Act against Fahim and his father and police are raiding to arrest them," the officer said.
At least 43 cases of acid attacks, including 51 women and eight men, have been recorded in Punjab province this year.
Prosecution rate in such cases is only 35 percent as several problems often persist during investigation and trial stage. Out-of-court settlements add to the woes of victims, according to local media reports.