When brands customize cosmetic tubes, they often prioritize the external decoration—the colors, the foil, and the finish. However, the most critical functional element is often overlooked: the orifice (the opening). Choosing the wrong aperture can lead to a product that is impossible to squeeze out or, conversely, a messy leak. Furthermore, as some brands have painfully discovered, the material of the tip must be chemically compatible with the formula to prevent catastrophic failures like corrosion.