As a counter example, I'm left handed and write hundreds of pages per year in a left-to-right language and don't have issues with smudging lines with my palm.
Maybe the inks I use dry fast enough (Parker Quink or Pelikan 4001) or it's the way I learned to write back in school.
You're probably doing the lefty-handed-curl. If you adopt a really weird writing position you can write without smudges. Depending on your body-type it's either easy and obvious or very uncomfortable. I'm in the latter group so I just use a pencil.
Euch. That lefty-handed-curl is a solution proposed by the right handed world. The correct way to write as a left handed person is to turn the page ninety degrees.
My left-handed father always turned the page 90 deg to the right when given something to sign, with the left side of the line up. He caught hell for that in catholic school.
> The correct way to write as a left handed person is to turn the page ninety degrees.
That is such a genius solution!
Or play it like DaVinci and write mirrored, right-to-left.
I looked up some pictures of this lefty-handed curl and I suddenly feel immense gratitude towards the people from my childhood that taught me how to use my left hand to write in a practical and comfortable manner.
I’d argue hand technique is more important than inks. I have wet pens with slower drying inks, and I write a similar amount without any smudges.
I'm right handed and used to smudge ink, don't ask me how. Only now, with my notebooks at 90 degree angle can I write properly without smudging.