The bead screw is the core component of the lipstick tube. It is the bead, fork, spiral, the bead screw and lubricating oil form the core of the lipstick tube. It is a bit like a pump core, but more complicated than the pump core. Some manufacturers also brag about lubricant-free beads. Fork screw design, but it is not widely used at present. Lipstick is the general term for all lip makeup. Including lipstick, lip stick, lip gloss, lip glaze, etc., it is a product that can make the lips rosy and shiny, moisturize and protect the lips, increase facial beauty and correct the lip contour. It is one of the beauty cosmetics for women and can show the appearance of the lips. Bring out the femininity.