Anna demonstrates how easy it is to use the KAJA Wing Eyeliner Pen & Stamp in her video review. She applies the eyeliner first and then effortlessly uses the wink stamp to create a winged look. The product seems to be user-friendly and provides a quick solution for achieving a winged eyeliner look. The stamp feature eliminates the need for precise hand movements, making it suitable for beginners or those who struggle with creating a symmetrical wing. However, the review does not mention the longevity or smudge-proof nature of the product, which could be potential drawbacks. Overall, the KAJA Wing Eyeliner Pen & Stamp appears to be a convenient tool for achieving a winged eyeliner look.