To use this Peripera Sugar Twinkle Duo Eye Stick, simply apply it gently under your eyes. You can choose different colors according to your makeup style. When using, make sure your skin is clean and dry. After applying, blend it well with your finger or a small makeup brush for a more natural look. Store it in a cool, dry place to keep it in good condition. Avoid exposing it to direct sunlight or high temperatures, as this may affect the quality of the product. If you have sensitive skin, it's a good idea to do a patch - test first.