The Plum NaturStudio Glitzy Gel Eyeliner is widely regarded as a high-quality product, with many users expressing strong satisfaction and recommending it. It is frequently praised for its smooth, effortless application and creamy texture, making it easy to use. The eyeliner is noted for its long-lasting wear, often staying put for several hours or all day, and is commonly described as smudge-proof and waterproof or water-resistant. Users appreciate its intense, bold pigmentation and its noticeable, glamorous shimmer or glitter finish, which is often deemed suitable for parties and special occasions. Some reviews highlight its gentle formulation, being kind to the eyes, and its vegan or cruelty-free attributes. A few comments also mention its affordability. Minor criticisms include some users finding it average, the glitter being potentially too bold for subtle looks, the need for a good makeup remover, and occasional smudging on oily lower lash lines.