When a skincare serum dropper pulls up too much or too little product, the problem may not be the bottle itself. Serum viscosity, pipette dimensions, bulb elasticity, and the fit between the dropper assembly and the …
Approving a glass bottle sample is an important milestone for a cosmetic brand, but it does not mean the packaging is ready to ship. After approval, the supplier needs to confirm the final specifications, prepare …
When a cosmetic bottle neck does not match the pump, the packaging may leak, loosen during transport, dispense inconsistently, or fail to close properly. Even if the glass bottle and pump look compatible, a difference in …