The 28-year-old victim, who police have named only as Tara, suffered injuries to her face and torso when she was attacked after answering the door on April 30.
Scotland Yard said today that the teen is accused of throwing corrosive fluid on a person with the intent to do grievous bodily harm.
The teen, who cannot be named because of his age, is to appear in court tomorrow.
Police said that the victim remains in the hospital, where she is being treated for burns.