In the video, a woman is seen applying lip liner to her lips. She starts by using a brush to apply the liner to the outer edge of her lips, carefully defining the shape. Next, she uses a lip pencil to fill in the color, creating a smooth and even line. The woman then uses a lip brush to blend the liner and pencil together, ensuring a seamless look. Throughout the process, she carefully applies the product, paying attention to the shape and color of her lips.