Multiplex desk surface: how to re-coat it like new?

Good day!

20 years ago, I had a desk made from multiplex boards. The carpenter coated the surface at that time with a transparent parquet varnish. For years, a slightly smaller glass plate lay on part of the board. Over time, this varnish reacted with various things, certainly including sweat, and became unsightly or "greasy" in parts.

Now I have completely sanded the board and am wondering what to apply on it now. I certainly will not use a two-component parquet varnish again, as I probably wouldn't be able to apply it cleanly either. Is any colorless oil suitable for this? I would also like to put the glass plate back on.

Does anyone have an idea?

Matthias

We have done quite a bit with multiplex, kitchen counters, bathroom slabs or coverings. Surely there are many options, but we have always worked with the company Osmo. If you want it clear, you can, for example, use the hard wax oil, colored and opaque, then the decorative wax. For the bathroom slab, we used TopOil, which looks quite good. You just have to keep in mind that the color does not absorb like with wood, so you have to apply it well and also faster; it is stated on the product each time. Otherwise, it could appear blotchy. You can apply it with a wide brush, cloth, or even a sponge, completely easy and proven many times. I had a colored, opaque decorative wax directly on the solid pine wood floor for over 10 years, it was simply great. The good thing about it was that you could paint directly over this color... which was never necessary despite normal use.