Treating natural wood. Wax, oil ?

[StrikeandRobin]

We’ve moved into a home that has lovely natural coloured bannister. We’ve stripped the heavily glossed window sills that are on the way up the stairs and they are matching wood.

What do I paint/coat them with to protect and preserve without changing the colour and making them shiny? Do I use linseed (or some other type of oil) or some sort of wax?
Tia.

Clear matt Osmo? Not sure there is anything that will leave no trace at all, but the clear matt Osmo is pretty good. Linseed oil in my experience makes everything very glossy, we use it to refresh our painted windows and external woodwork.

Thank you, there are just so many wood treatments to choose from I had no clue where to start!
I will look into the Osmo.
thanks.

I use polyvine wax finish varnish for a lot of wooden things, shelves in the pantry I may want to wash down, and so on. Its advantages- water based, dries fast, and is fairly tough. Doesn't crack or peel off if applied as per instructions.
Wood floors, tung oil.
Just used polyurethane varnish for a box, because I want a very high gloss- but, smelly, solvent based, takes ages to dry.
Bookshelves I use liquid wax.
For window sills in our conservatory which would get a lot of light, I used a varnish with a uv-blocker so the wood didn't alter in colour too much with the light. Still does a little, but not nearly so much as a bog standard varnish. I can't remember the make, probably Sadolin or Polyvine, both make one, as do Osmo but I haven't used that.

Osmo also do wax oil in 'raw' finish. It has a little bit of white pigment added, which is supposed to counteract the 'wet wood' effect (i.e. slightly darker/intense shade) that other finishes may create