Thanks to Salafia's embalming techniques, the body was well-preserved.
X-rays of the body show that all the organs are remarkably intact.
Rosalia Lombardo's body is kept in a small chapel at the end of the catacomb's tour and is encased in a glass covered coffin, placed on a wooden pedestal.
 A 2009 National Geographic photograph of Rosalia Lombardo shows the mummy is beginning to show signs of decomposition, most notably discoloration.
To address these issues, the mummy was moved to a drier spot in the catacombs, and her original coffin was placed in a hermetically sealed glass enclosure with nitrogen gas to prevent decay.
The mummy remains one of the best preserved bodies in the catacombs.

That same year, Capuchin catacombs curator Dario Piombino-Mascali discovered a handwritten manuscript written by Salafia, wherein he lists the ingredients used to mummify Rosalia.
The embalming formula is described as "one part glycerin, one part formalin saturated with zinc sulfate and zinc chloride, and one part of an alcohol solution saturated with salicylic acid", and was entered into the body through a single-point injection, most likely into the femoral artery via a gravity injector.
Rossella Lorenzi of Discovery News reported that the formalin was used to kill bacteria, the glycerin used to prevent desiccation, and the salicylic acid used to eliminate any fungi within the flesh, with the purpose of the zinc salts being petrifaction.

The mummy has achieved further notoriety for a phenomenon in which her eyes appear to open and close several times a day, revealing her intact blue irises.
In response to speculation about her moving eyelids, Piombino-Mascali stated that "It's an optical illusion produced by the light that filters through the side windows, which during the day is subject to change ... [her eyes] are not completely closed, and indeed they have never been".
Thanks to Salafia's embalming techniques, the body was well-preserved. X-rays of the body show that all the organs are remarkably intact. Rosalia Lombardo's body is kept in a small chapel at the end of the catacomb's tour and is encased in a glass covered coffin, placed on a wooden pedestal.  A 2009 National Geographic photograph of Rosalia Lombardo shows the mummy is beginning to show signs of decomposition, most notably discoloration. To address these issues, the mummy was moved to a drier spot in the catacombs, and her original coffin was placed in a hermetically sealed glass enclosure with nitrogen gas to prevent decay. The mummy remains one of the best preserved bodies in the catacombs.
That same year, Capuchin catacombs curator Dario Piombino-Mascali discovered a handwritten manuscript written by Salafia, wherein he lists the ingredients used to mummify Rosalia. The embalming formula is described as "one part glycerin, one part formalin saturated with zinc sulfate and zinc chloride, and one part of an alcohol solution saturated with salicylic acid", and was entered into the body through a single-point injection, most likely into the femoral artery via a gravity injector. Rossella Lorenzi of Discovery News reported that the formalin was used to kill bacteria, the glycerin used to prevent desiccation, and the salicylic acid used to eliminate any fungi within the flesh, with the purpose of the zinc salts being petrifaction.
The mummy has achieved further notoriety for a phenomenon in which her eyes appear to open and close several times a day, revealing her intact blue irises. In response to speculation about her moving eyelids, Piombino-Mascali stated that "It's an optical illusion produced by the light that filters through the side windows, which during the day is subject to change ... [her eyes] are not completely closed, and indeed they have never been".
Rosalia Lombardo