That's pretty much any finish that cures/hardens. But only lacquer and water-bourne finishes will minimally alter the native colour of the wood. The lightest shade of shellac (bleached) might also suit if you were okay with applying it to such large surfaces.W666":1xs740gw said:It needs treating with something that won't ever transfer onto the mattress.
And oxidation. Almost everyone seems to forget that exposure to air itself contributes to colour change in wood. Even film forming finishes don't prevent molecular migration of air into and out of wood, with the possible exception of epoxy resin type finishes, and I don't think even that finish is a complete barrier to molecular transfer from one side of the film to the other. I could be wrong about that though. Slainte.Trevanion":uxjy32x3 said:... So in all, whatever you put on it will affect the colour somewhat, but not as much as UV will in a few years time.