Summary

• Vape shops often offer a wide variety of e-cigarette products, including re-usable and modifiable products which may provide youth with long term continuous access to ecigarettes that can be shared with peers.
• It is hypothesized that allowing exemptions to adult only stores (sampling, marketing) may allow governments to more heavily regulate other types of retailers that are frequented by youth however no evidence was found for this regulatory approach. 
• Regulations to further restrict e-cigarettes sales to adult only vape shops may be facilitated by study findings demonstrating that in both Canada and the United States, most vapers bought their products from vape shops. Adults who purchase e-cigarettes from vape shops are also more likely to quit smoking.
• Adequate enforcement of sales at adult only vape shops have been weak in the past and
  would need to be ramped up for this intervention to be effective.