Hand sanitizer is a kind of skin care cleaning liquid used to clean hands. Through mechanical friction and the action of surfactant, under the condition of water flow or no water, the dirt and attached bacteria on the hands are removed, and the skin of the hands is moisturized.

Hand sanitizers in China's market are mainly divided into two categories: one is ordinary hand sanitizer, and its hygiene license on the label is "cosmetic protection", which can only play the role of cleaning, decontamination and skin care. The other is a special hand sanitizer with antibacterial (bacteriostatic) effect, and its hygiene license on the label is "Xiao Wei Zheng Zi", which has antibacterial or bacteriostatic effect.