HHC O Vape Cartridges vs Delta 10: Which Is Better? Shop The Best HHC Vape Pen At Society's Plant HHC Vape Pens 3pc Variety Pack 1g Disposable HHC Weed Pens HHC, often sold in vapes and gummies, is now illegal to sell, possess, or distribute across Ireland. Hexahydrocannabinol (HHC) was legally available in Ireland mostly through vape shops despite the strong concerns of medical experts, until the Government eventually banned its sale last July.