One of the primary advantages of 4 oz glass jars is their versatility. These jars can be used in a diverse array of industries, including food and beverages, cosmetics, and crafts. They are perfect for packaging homemade jams, jellies, sauces, and even herbal remedies. In the beauty industry, they can store lotions, creams, and essential oils, making them an appealing option for artisanal brands looking to create a high-quality image. Additionally, craft enthusiasts often use these jars for DIY projects, such as candle making or storage solutions for small items.