Bisou masks not only prevent dust, chemicals, and polluted vehicle smoke, but also prevent droplets from being shot into the nose. With 3-layer quality masks that have been carefully inspected by the authorities.

Absolutely not uncomfortable - but on the contrary, very pleasant because the ear strap is soft and chewy enough of elasticity to keep the mask over the nose & mouth area. Use for a long time without ear pain and facial discomfort.

Bisou masks are fully qualified, have been tested and certified with ISO 9001, the Ministry of Health of Vietnam, ISSQ, QUATEST3, Khue Nam, and others.

Bacterial Filtration Efficiency (Bacterial Filtration Efficiency in English and BFE for short) is a test to evaluate the effectiveness of bacteria filtration by comparing the number of bacteria that the material or device can filter.

This test method evaluates the microbial filtration efficiency of a medical mask, using the relationship between exposure of bacteria introduced into the air stream from above and the remaining concentration in the lower air stream to confirm the The effectiveness of the filter material used to prevent the spread of pathogens.

Bisou masks have performed all stages of testing from different test units, please see more details of the test results.

Bisou Medical Masks are for single use only. Due to the structure of the Medical mask has three layers and in particular, the middle layer functions to retain water droplets that may contain the germs that are thrown off when you cough. Because of these features, after using the medical mask, it is a germ containing many pathogens that affect your health if not removed immediately after one use.