Regulations making face coverings mandatory in shops and other indoor public settings including hairdressers and cinemas were introduced this week.
Anyone found in breach of the rules can be fined up to €2,500 or face six months imprisonment.
The move to make face coverings mandatory in shops and other retail outlets was announced three weeks ago, with regulations enforcing the measures coming into effect from Monday August 10th.
The regulations apply to shops, supermarkets, shopping centres, retail outlets, hairdressers, nail bars, museums, libraries, and cinemas.
The new regulatory requirement does not extend to restaurants, bars, cafes, or post offices or financial institutions, nor do they apply to healthcare service providers such as opticians or dentists.