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.
Teenager From Greystones Named As One Of The Victims Of Icelandic Car Crash
No Turning Back! — Oisin McConville Secured For 2027 In Massive Wicklow Boost
Pure Magic! 20 Years of Keeping Wicklow Uplands Clean
EU Defence Ministers Descend on Wicklow as Government Pledges €10m More for Ukraine
Old Recording Adds To Intense Concern About Road Safety