"My favorite clear finish for chairs is a combination of linseed oil, beeswax and a little bit of citrus solvent."
Nice for inside, on outdoor items Waterglas or birch tar thinned are far better as a preservative.
Water glas will also strengthen aged or even badly rotted wooden items.
Just have some very decorative pieces in that waterglas process, later they will be used in large bowls with ficus pumlla
Without treatment the wood started to mold and rot.