The Khol Eyeliner in Rich brown color by Jillian Dempsey is highly praised by Kristina in her video review. She mentions that the liner is waterproof and stays on her waterline for a long time, making it the best waterproof eyeliner she has ever tried. Kristina also appreciates the brown color, as it adds a nice pop to her eyes. The liner is described as giving a subtle enhancement to the eyes without being too harsh. Overall, the Khol Eyeliner in Rich brown color by Jillian Dempsey is a highly effective and long-lasting product that provides a natural-looking enhancement to the eyes.