"Smiles are so important," says Dr. Jan Linhart (men/women; The Helmsley Building, 230 Park Ave., Ste. 1164, 212-682-5180). "They're the first thing you notice when you meet a person." Perhaps time has not been kind to your teeth, or maybe you've been meaning to fix chips or other tooth imperfections, but simply haven't had the time. Consider booking a porcelain veneer consultation with Dr. Linhart. If you decide to proceed, the entire process takes just three days, and promises to shave years off of your smile.