How to Prevent Lip Gloss Tube Leakage: Wiper, Neck and Cap Design Explained

Lip gloss tube leakage is rarely caused by one obvious defect. It usually develops from the interaction between the formula, wiper, bottle neck, applicator rod, cap, thread system, filling process, and transport conditions.
Cosmetic Packaging Compatibility Testing: A Practical Guide Before Mass Production

Cosmetic packaging compatibility testing is not a final box to check after a package has been selected. It is a decision-making process connecting formulation, materials, structure, decoration, filling, logistics, and consumer use.