As nicotine is highly addictive, marketing nicotine-containing products is regulated in most jurisdictions. Regulations include bans and regulation of certain types of advertising, and requirements for counter-advertising of facts generally not included in ads (generally, information about health effects, including addiction). Regulation is circumvented using less-regulated media, such as Facebook, less-regulated nicotine delivery products, such as e-cigarettes, and less-regulated ad types, such as industry ads which claim to discourage nicotine addiction but seem, according to independent studies, to promote teen nicotine use.