The function of a label or sticker used on packaging is to provide important information about the product, such as its name, contents, ingredients, instructions for use, or safety warnings. Labels and stickers can be made from a variety of materials, such as paper, vinyl, or plastic, and can be customized with a range of colors, designs, and shapes to match the branding or design of the packaging.

Labels and stickers can also be used to provide promotional or marketing messages, such as special offers or discounts. Additionally, labels and stickers can be used to enhance the security of the packaging, such as by providing tamper-evident features or anti-counterfeiting measures. Labels and stickers can be a versatile and effective tool for conveying important information, enhancing the branding and design of packaging, and ensuring the safety and security of the product.