How often should I use a hone on my razor?

I bought a fine Keen Cutter Combo Barber Hone from LawsonStone on here just haven't used it yet because with my 3 razors, well 2 that I've mostly been using but all 3 seem very sharp & still shave wonderfully, but I thought how many shaves before I should run my razor across my hone?


I'm not talking restoring an edge, I'm talking about a few strokes to maybe true up the edge, if that's the right way of putting it.