Michelmam offers Michem Lube 190,  an anionic polyethylene wax emulsion additive that significantly improves the mar and scratch resistance, and water repellency, of architectural and decorative paints, stains, sealants and numerous other interior and exterior coatings, according to the company. It is commonly used in exterior wood coatings when abrasion resistance is required along with water beading, and can provide blocking resistance as well. This low-VOC surface modifier is also used in rub resistant high gloss OPV’s and topcoats where water sensitivity is important. It produces good results at 5% in styrenated acrylics from 200 to 500 strokes.