Sodium citrate is a builder that can also be found in various household products including shampoos, mascara and lipstick. We use it to make a product formula clean better by affecting the molecules in the formula so they work together better. It can also be used as a stabiliser that maintains the clarity of the product and protects its pH. The pH of a formula can affect how long it lasts within a container – for example limiting its tendency to corrode a tin, container or dispenser. To ensure product performance, it is important that our product formulas maintain their stability over time.