Target is getting serious about beauty. First, the retail giant upped its cosmetics game by staffing aisles with beauty concierges. Now, seven new skin care lines — existing brands, as well as products that were created exclusively for Target — are available at 749 stores and on Target.com. Brands include La Roche-Posay, Borghese Age Defying Cellulare Complex and MD Complete, a line created by Dr. Brian Zelickson, a Mayo Clinic graduate and Minneapolis dermatologist. “I’ve seen skin problems day in and day out for the last 20 years,” said Zelickson. “The goal in creating MD Complete was to create a line that was simple in its approach but yielded clinical-type results.” Products range from $8 to $55 in price (average price is $28).