The Hourglass Vanish Airbrush Concealer in Sepia color is highly recommended by Bethany in her video review. She has been using this concealer for a year and considers it her absolute favorite. Bethany demonstrates how the concealer effectively covers up her dark circles by applying a line under her eyes and on her eyebrows, and then blending it in with a beauty blender. She highlights that the concealer immediately brightens the under-eye area without leaving any lines. Overall, Bethany praises the Vanish Airbrush Concealer for its ability to provide excellent coverage and a natural finish, making it a must-have product.