M-Chitosan masks can be purchased through our online store. For customers outside of Hong Kong, please submit an enquiry to [email protected]. A representative will contact you with details.

After completing your purchase, you will receive an email confirmation that your order has been placed. All orders require 7-10 working days to process. Once your order has been processed, you will receive a notification that your M-Chitosan mask(s) have been delivered to your designated Circle K store. Simply bring your confirmation and pick up your M-Chitosan mask(s).

Our M-Chitosan masks are tested using washing machines. Our test reports indicate that after 100 machine washes, the masks remain 99.9% antibacterial. This test, however, does not guarantee that the M-Chitosan mask will retain its shape. With that in mind, we recommend hand washing the mask with cold water and mild detergent to maximize its performance.

M-Chitosan masks are functional accessories. Our masks are meant for daily use and is not a surgical mask. Surgical masks are used by medical professionals. By choosing M-Chitosan, you are choosing a sustainable alternative to disposable masks and ensuring supplies for frontline medical workers are met.

Please contact [email protected]. A representative will contact you with details.

Unfortunately, due to the nature of our product, we cannot accept returned goods. Thank you for your understanding.