The Wing Eyeliner Pen & Stamp -2 pcs by KAJA was reviewed by Manuela in a video demonstration. She showcased how easy it was to achieve a perfect winged eyeliner in less than a minute. The product comes with a pen and stamp, making the application process quick and effortless. Manuela expressed her satisfaction with the eyeliner, stating that it left a lasting impression on her mind. Overall, the product seems to be user-friendly and effective in creating a winged eyeliner look. However, without further information, it is difficult to assess any potential drawbacks or limitations of the product.