Co-founded by Harvard Business School alum Marla Malcolm Beck, this makeup and skin care emporium has representatives from each product line (like Laura Mercier, La Mer and NARS) meticulously train each staffer. And because it’s also a spa, staffers can recommend products that go beyond aesthetics to complement your skin type. You’ll feel confident in their picks—plus, they’re always happy to give tutorials. You just might leave with a full makeover.