The "Faces" poster by Aylin Demir features a collection of square line drawings portraying abstract faces in washed-out colors. Available in A5, A4, A3, 30x40cm, 40x50cm, 70x50cm, 70x100cm, and 100x140cm sizes. The color palette includes yellow, green, rose, and other vibrant hues, creating a colorful and abstract depiction of the human face. This portrait series offers a unique and captivating exploration of facial expressions in an artistic and abstract style.