Mary Kay Inc. will build a $100 million manufacturing and R&D complex near Lewisville’s Vista Ridge shopping mall. The new plant will start construction in September on 26 acres at the northeast corner of Denton Tap Road and Vista Ridge Mall Drive near State Highway 121. The project will replace the company’s almost 50-year-old plant in Northwest Dallas. The 470,000 square foot building will open in the first quarter of 2018. The manufacturing operation produces up to 1.1 million products per day and more than half of the output of that plant is exported to Mary Kay Inc.’s international markets.