If you're getting makeup for Christmas, you're being warned to only buy the real deal.
Fake versions of brands like MAC, Urban Decay and Benefit can contain arsenic or lead which can make you ill.
The Health Products Regulatory Authority has found fake high-end beauty products on sale through markets and websites.
The HPRA says over the past year thousands of counterfeit cosmetics have been prevented from entering the country by Revenue's Customs Service.
But some quantities have managed to make their way onto the Irish market and are being sold through markets and websites.
An investigation found harmful substances in a number of counterfeit cosmetics - using brand names like MAC, Urban Decay and Benefit.
The HPRA is warning that exposure to arsenic and lead can cause organ damage and symptoms can include stomach pain, headaches and vomiting.
Other products may have been manufactures in unhyggienic consitions and may cause skin irritation or eye infections.
The advice is if the make up is significantly cheaper than high street shops, and if the packaging is faded or misspelled - then it's likely to be fake.
Earlier this week over 200,000 euro worth of counterfeit goods were found at a premises in Mullingar in Co Westmeath
They included MAC make up - Michael Kors handbags - Converse shoes - UGG Boots and other goods.
