Quebracho powdered tannin. Natural tannin extracted from the heartwood of the South American Quebracho tree, used to artificially age new wood — to bring fresh stock to the deep, oxidized tone of an antique before any finish goes on.
Applied as a tea-strength solution and brushed onto raw wood, then followed with an iron-acetate or potassium-dichromate solution, the tannin reacts to produce the dark patina that old wood develops naturally over decades. Used by serious furniture restorers and reproduction makers who want a starting point that matches an original piece.
This is not a finishing product — it is a wood preparation. The shellac, oil, or varnish that follows it sits on aged-looking stock from the first coat.
Hard to find. We carry it because the people we serve need it.