Hi ! If your talking about the Scotchbrite pads, those will also take out the soft parts
of the grain, and will also scratch the hard grain, allowing more dirt to accumulate. I am not sure of the softness, of the brush, but from what I have read on the issue most people who do what you want to do use a soft brush, dipped in salt water
against the grain to minimize the wood removal
. Best of luck with it! Nice to see, when someone tries to maintain a fresh look of their vessel!