The Molly Malone statue will need its bronze plating repatinated after suffering a second vandalism yesterday.
Dublin City Council had staff on site today attempting to clean the green graffiti from the statue on Suffolk Street. Further work is also required to clean the plinth.
Repatination involves the replacement of the patina layer that is already in place on the statue. It is a layer that can either be added upon design or naturally over time due to weather and environmental conditions.
The council have also confirmed that preventative measures such as removal or barriers are not being considered. They say that it would "detract from the enjoyment of the public".
A council spokeswoman told Dublin Live: "Dublin City Council strives to respond as quickly as possible to such acts of vandalism and graffiti.
"In this case due to the specialist nature of the care and maintenance of bronze, expertise is required to remove such paint and chemicals as the incorrect treatment can do lasting damage. Therefore it can take time for foundries to get on site.
"Regarding preventative measures. The statues and sculptures in Dublin are for the enjoyment of the public and measures to protect them such as protective barriers or removal indoors would greatly detract from the public realm.
"Bushy Park Ironworks were on site early this morning and the paint from the two acts of vandalism has been removed. We are getting stone cleaners in to remove the graffiti on the plinth and the statue will be repatinated later this week."