Northshore Mall is seeing some additions to its store lineup. The Art of Shaving, which sells skin and facial shaving products for men, recently opened across from Starbucks, according to officials of the Simon mall, on Route 114 in Peabody. Zumiez, which sells clothing, footwear, accessories, and gear for skateboarding and snowboarding, recently opened across from the Pottery Barn. The two stores join other new businesses that opened at the mall in March, including Crumbs Bake Shop, Motherhood Maternity, and Sleep Number by Select Comfort. Meanwhile, Build-A-Bear Workshop recently moved to the Macy’s wing and updated its store, and the Body Shop is set to reopen when it completes renovations this summer.