Don’t let it remain damp for too long though – it is micro-porous so the damp can get in and blacken the wood (more likely if it is European oak I believe – UK and American oak is less likely to blacken when it gets damp).
But the good thing about Osmo stuff is that the surface can be spot-sanded and resealed without it leaving a change in colour.
But saying that, we have an oak table and chair set that I treated in it when our two little girls started eating at the table (it was originally an unfinished oak) and it has been faultless in 5 years – a few surface scratches that I know will just take a 5 minute re-paint to remove.
And it smells lovely.
EDIT: – I agree with the spot test though – it does make the oak go more golden and my wife doesn’t like the colour of the table as much as she did.