Hair spray may keep our hair in place, but it does a job on our mirrors. They are left with marks, spots, and blurry areas. Remove this sticky residue by making a solution of equal parts of white vinegar and water in a spray bottle. Spritz on the glass. Let sit for a minute then wipe off with a clean paper towel. A microfiber cloth works too. The vinegar will have broken down the tacky residue and leave you with a clear glass to see your reflection.