Seven people were then arrested following a demonstration in the area.
A woman was arrested on Wednesday morning after reopening her beauty salon, C and N Beauty Rooms in Balbriggan, for the second day in a row.
The salon was opened to the public on Tuesday for a brief period before being shut down by Gardaí.
The owner of the salon, who said she opened the premises as she needs “to put food on the table”, was warned by Gardaí on Tuesday that she could be arrested if the salon was reopened to the public again today.
After the salon was once again reopened to the public, Gardaí arrested the woman, aged in her 40s, for breaches of the Health Act 1947.
She has since been charged and is due to appear before Swords District Court later this afternoon.
Gardaí are also investigating a demonstration that was held in Balbriggan this morning, where a number of people arrived at the salon to show support for the business.
Seven people were arrested in relation to this demonstration and associated breaches of the Health Act (four men and three women).
Six of these arrests were dealt with by way of Fixed Penalty Notice, Gardaí said.
The other person arrested, a man aged in his 50s, has been charged in relation to this incident. He is due to appear before the Swords District court on Wednesday afternoon.
In a statement released following these arrests, An Garda Síochána said that it has no role in permitting or authorising protest marches or gatherings, and that there is no permit or authorisation required for such events.
It said: "A decision as to whether any protest takes place rests solely with organisers.
"An Garda Síochána encourages organisations and individuals organising such events to liaise with An Garda Síochána in advance to assist in the safe and peacefully organisation of the event. Where possible An Garda Síochána will advise identified organisers of such events as to their responsibilities and potential consequences."
