Apply Lash Accelerator Serum to bare lashes as you would a lash primer and fill in sparse brows before eye makeup application. Apply Lash Accelerator Mascara over serum to lengthen appearance of lashes. Use Lash Accelerator Serum as overnight treatment to support lash and brow growth around the clock. Ophthalmologist and clinically tested. Suitable for contact lens wearers and sensitive eyes. Always treat applicator with the same sanitary care you give your eyes. Reserve it for personal use.