material to ensure the quality of maintenance products, but also learn how to use and preserve, so that the face of the maintenance products no worries.
The main reason is the high variability of plastics, all sizes, shapes, colors, transparent, opaque can be done. Light weight, easy transportation, good printing, recyclable, etc., are the reasons why plastic containers have been chosen. The fate of plastics is heat resistance, insufficient light barrier, and poor solvent resistance(especially grease). Therefore, the first bottleneck in plastic containers is that they can not be sterilized by high-temperature steam, can not be washed with water, and can not be sterilized by light. In addition, considering the stability of the contents, some maintenance items are not suitable for inclusion in plastic containers. Compared with plastics, the glass material's heat resistance, light resistance, and solvent resistance absolutely win.
So, unless it's poor quality glass, the best place to live is in a glass container. The metal material is subject to many restrictions on the molding style. Containers are mostly cylindrical(essential oil bottles) and wide-mouthed bottles(lip balm). The maintenance products filled with pure oil paste are mostly used as bottle caps and caps. Accessories.