Direct answer

The foaming hand soap has already foam; can the handwashing time be shortened?

This should not be shortened on that basis. Pre-foaming does not mean that both hands have been fully covered and rubbed. Unless the label of the product in use or professional institutions provide clear instructions for specific scenarios, you should still wet your hands, take an adequate amount of the product, cover your palms, backs of hands, between fingers, thumbs, and around the nails, rub for about 20 seconds, then rinse thoroughly with clean water and dry completely. The product name containing 'antibacterial' should not be understood as allowing steps to be skipped or automatically being superior to regular soap.

Foaming hand soap mixes air and liquid at the pump so that the product comes out in a foamy state; it addresses the form in which the liquid comes out, but it won't ensure contact with all areas of your hands or perform mechanical rubbing for you. The steps given by the U.S. Centers for Disease Control and Prevention are still wet hands, lather with soap, scrub for at least 20 seconds, rinse, and dry, with no shorter process provided just because the product foams beforehand.

Canadian public health authorities break down the steps in more detail: rub for at least 20 seconds, covering the palms, backs of the hands, between the fingers, thumbs, and under the nails. The UK's NHS similarly recommends about 20 seconds and requires enough soap to cover both hands. What is actually easy to miss is usually not whether there are bubbles, but whether the thumbs, fingertips, spaces between fingers, and backs of the hands are thoroughly included.

The World Health Organization and UNICEF's 2025 Community Hand Hygiene Guidelines emphasize regular soap and water, full coverage and rubbing, as well as conveniently available facilities. It prioritizes sustained behavior over product gimmicks. Therefore, foam types may be a matter of user preference or pump designs, but one cannot infer shorter duration, stronger effects, or less usage based solely on the formulation; these conclusions require evidence specific to the product and conditions.

The two characters "抑菌" (antibacterial) cannot be used as a pass to skip steps. The U.S. FDA has noted regarding over-the-counter consumer antibacterial wash products in the United States that there is currently insufficient evidence to show that these products are superior to regular soap and water in preventing disease; this conclusion applies to U.S. jurisdiction and specific products, and cannot directly replace labeling and regulatory requirements for Chinese products, but it is enough to remind consumers not to automatically translate the name into shorter hand-washing times.

In the inventory records of EPHYON, the Bubble Antibacterial Hand Sanitizer is a 300g liquid product, and the Antibacterial Hand Sanitizer is a 500g liquid product. How to measure the amount, the applicable population, and precautions for both products should be based on the actual labels of the current product in hand.

The practical procedure can be summarized in five steps: first, wet your hands with running water; take an adequate amount of handwashing product; rub for about 20 seconds, covering the palms, backs of the hands, between the fingers, thumbs, and around the nails in sequence; rinse thoroughly with clean water; thoroughly dry with a clean towel, paper towel, or other appropriate method. If there is obvious grease, chemicals, or special contaminants on the hands, follow the specific requirements of the workplace, medical institution, or product safety information.

Whether to choose a foam type or regular liquid type can depend on the stability of the pump, the refill method, the operating habits of family members, and the label instructions, rather than guessing which is 'naturally faster.' The same applies to OEM projects: formulation type, pump, amount per use, packaging capacity, and instructions need to be sampled and verified together to avoid conflicts between pump experience and label recommendations.

The conclusion is simple: foam is the product state at the beginning of handwashing, not evidence that handwashing has been completed.