As I see it salts enable you to have more nicotine without the harshness, of course it will cause problems eventually, so the powers that be jump all over this and vaping gets a bad name as if us vapers need any more ridicule, 3mg is enough for dtl its about the same as a normal cigarette 6mg is overkill, I started at 18mg using mtl but now happy with 3 using dtl