How does snus work? Is it possible to make it yourself?

 Vasily L.
How does snus work? Is it possible to make it yourself?
Does snus have to contain a preservative (salt)? As I understand it, it is she who corrodes the mucous membranes, in connection with which cancer occurs, after many repetitions. If there is no salt, will snus work? Will it be any less harmful? By harm I mean oncology, not concomitant diseases

Answers:

Murdoc
xDD

The Greatest Prophet Frtemiy Vezuglov
Should he be sucked?

Yarik
Do you read what you write? Salt is a preservative, and corrodes mucous alkali. In this case, SODA, and in general, lime is added