The EU’s Tobacco Products Directive (TPD) was transposed in Finland the form of the Tobacco Act, which made Finland one of the EU’s most strictly regulated countries. Market growth of 40% throughout 2016–2017 was mainly determined by increased numbers of vapers (+16%), growth of the share of daily users (30% in 2017 compared with 14% in 2016), plus an overall price increase in most e-cigarette categories.