A ban on the sale of vapes to under 18s takes effect from the 22nd of December.
Penalties for breaking the new rules could include fines of up to €4,000 or six months in prison.
Other measures are due to follow next year, including action on e-cigarette sales in vending machines, and advertising.
Health Minister Wicklow TD Stephen Donnelly says the legislation is important.
Public Urged To Avoid Bray Head As Gorse Fire Smoulders
Wicklow’s Mason Melia Makes International Bow For Boys In Green In Latest Career Milestone
Velvet-Voiced Welshman Films Wicklow Mountains From Wales Thanks To Sea Heatwave Phenomenon!
Wicklow Salutes FTD Brothers As They Complete 32 Marathon Challenge
Not Yet Shaken Or Stirred: Greystones Actor Steps Into Young James Bond Role