@timothy.mountcastle: We asked Jillian which iS Clinical products she loves—and she had two favorites. ✨ Pro-Heal Vitamin C and retinol came up in her picks. The right skincare routine depends on your skin and goals, so ask your skincare professional what may be a good fit for you. 📍Mountcastle Medical Spa | Ashburn, VA #ISClinical #SkincareFavorites #VitaminCSerum #Retinol #AshburnVA