Please select the appropriate login portal you wish to access. Employees. The benefits links below are for registered employees only. Payroll Login. 401K Login. Flexible Spending Account. ... Charm Sciences, Inc. (Headquarters) 659 Andover Street Lawrence, MA 01843-1032 USA. 1.978.687.9200 Toll Free: 800.343.2170 fax. 1.978.687.9216. Charm ....