Vaping often involves complex devices that may require technical knowledge for optimal use; in contrast

https://www.scribd.com/document/1017653415/Pablo-Snus-vs-Killa-Snus-Which-Option-is-Right-for-Your-Nicotine-Needs-164708

Vaping often involves complex devices that may require technical knowledge for optimal use; in contrast, snus is straightforward with no learning curve involved in getting started.