Mica powders, lime wash, raw egg, and cheese curds
I just had an interesting exchange of emails with a young artist from Spain regarding concrete recipes and Faux Bois. His great uncle was a Faux Bois master and work for wealthy folk around Valencia.
Those are just a few of the ingredients in his Faux Bois recipes. Some of his recipes ran 15-20 different ingredients including a special very fine dark brown dirt from a location he never revealed.
Some were used so sparingly in the recipes they were measured on his small finger nail.
He promised to send me a few pictures of his uncles work and a few translated to english recipes.