Doc Bailey's Leather Black Cleaning Restoring and Waterproofing Solution The original Doc baily's leather black actually contain a dye pigment that restores lost color cleans, nourishes and waterproofs Doc Baily's leather black gently cleans leather with specially formulated detergents which actually lif dirt out, opening the pores of the leather allowing the lanolin oil to flow into the leather nourishing and softning it Doc Baily's black acually penetrates deep into the leather to restores lost color