Cosmetics have gradually replaced glass with plastics, plastic flexible packaging and other materials.

(1) Plastic: Plastic is the most common and widely used packaging material in cosmetic packaging. It has the characteristics of light weight, low price, easy mass production, good printing compatibility, and can adapt to various printing methods such as direct printing, thermal transfer, and inkjet. Therefore, it has been widely used as the main packaging material for various cosmetic packaging for a long time. In addition, with the continuous maturity of materials, molds and blow molding technology, the transparency of plastics is also constantly improving. At present, the transparency of some plastic products is close to that of glass, making plastic replace glass as the most important material for cosmetic packaging.