Want your Mercedes to gleam again? Owners of Lamborghinis, Ferraris, and Porsches will tell you to take it to Osama Syed’s two-year-old company, one of only two in Illinois listed as an elite detailer by DuPont Registry, a marketplace for luxury cars. Aesthetic Detail will baby your wheels, offering everything from leather treatments to full paint correction and coatings that can keep their shine for years. Prices range from $399 for a package that includes sealant and a hand wash to $4,999 for a full-paint correction and water-repellent coating.

How to: Keep your car beautiful all year

"Chicago has a lot of pollen, which sticks to cars and eats away paint. So whenever you see yellowish dust, gently wipe your car with Meguiar’s Ultimate Quik Detailer ($11, meguiarsdirect.com) and a microfiber towel. Avoid automatic car washes with brushes, which can cause swirl marks. And have a good sealant applied every six months—most importantly in the fall, before winter storms come." —Osama Syed, owner of Aesthetic Detail