A packet is a small bag or pouch, made from paper, foil, or plastic film, often used to contain single-use quantities of foods or consumer goods such as ketchup or shampoo. Packets are commonly opened by making a small rip or tear in part of the package, and then squeezing out the contents.
Condiments distributed in packets include ketchup, mustard, mayonnaise, salad cream, HP sauce, relish, tartar sauce, vinegar and soy sauce. They provide a simple and low-cost way of distributing small amounts of condiment with ready-to-eat packaged food such as hot dogs, French fries, or hamburgers, and are common in fast food restaurants. The packets produce less contamination and mess than freely available condiments dispensed into small disposable cups or other containers, especially if the food will be in transit before dining. Potpourri fragrances are also sold in sachets. Potpourri sachet envelopes are filled with scented herbs and flowers or use vermiculite containing aromatic fragrance oil. These are known as potpourri wardrobe sachets. In Argentina and Uruguay, milk and yogurts are also sold in packets.
In 1983, the Indian company Cavin Kare began selling shampoo in small plastic packets instead of large bottles in order to make it more affordable to the poor. Sale of small amounts of shampoo and detergents in plastic packets is very popular throughout the Philippines, India and other Eastern countries. In 2011, 87% of shampoo sold in India was in sachets.