Traditional slime is a popular, stretchy substance made primarily from polyvinyl alcohol (PVA) glue and a borate solution, often using contact lens solution or borax. It has a gooey texture that can be manipulated into various shapes, making it a favorite for sensory play among children and adults alike. The process of making traditional slime involves mixing the glue with water and then adding the borate solution to create a chemical reaction. This reaction causes the ingredients to bond, resulting in a thick, elastic material. Traditional slime can also be customized with colors, glitter, or scents for added fun.