The tips of my fingers are really dry?

The skin on five of my fingers' tips is very dry, like in the picture. They're not painful or anything.
Sometimes they are extremely dry (even moreso than the one in the picture), sometimes it's very barely noticeable, but it's always the same fingers and this problem has been "haunting" me for years.
Applying moisturizer doesn't really help at all, at best it somewhat hides the dryness for a while.

Nowadays I automatically try to avoid shaking hands or any contact like that with people, because I can't stop thinking about whether people can see my fingers and what they will think. I guess you could say that I have a fear of grossing out other people.

So, does anyone have experience with something like this? Is there something I could do so they would disappear forever??
Thank you!