Dorian Ho x M-Chitosan presents
Limited Edition Smile HK Chitosan face masks.
99.9% antibacterial, washable and reusable up to 100 times
Available now in 7 colors and 4 sizes
During this Covid-19 pandemic, our smiles are often covered with a mask as we fight this invisible enemy together.
M-Chitosan is collaborating with acclaimed fashion designer Dorian Ho, presenting a fresh series of Chitosan face masks known as Smile HK. Our goal is to bring positive vibes to Hong Kong during these unprecedented times.

Hypoallergenic skin-friendly masks to promote happiness for all
Designed by renowned fashion designer Dorian Ho, Smile HK is a series of rainbow coloured masks embellished with the letters HK. Its vibrant designs are chic and cheerful, while the chitosan cotton ensures comfort and protection.
Smile HK Chitosan face masks are practical and fashionable.
The entire series will consist of 7 colors and 4 sizes (2 adult sizes and 2 children sizes).
Color Collections
Smile HK masks are available in a 7 colors and 4 sizes. Our 3D design ensures maximum comfort.
Mask Size Chart





Product Introduction
M-Chitosan are washable and reusable protective fabric masks. The Chitosan fabric in the inner layer remains 99.9% antibacterial even after 100 washes. The water repellent outer layer can block water droplets, lowering the risk of infection.
Choosing M-Chitosan masks is an eco-friendly alternative.


Specification
TEST ITEM | TEST METHOD | RESULT |
---|---|---|
Antibacterial Performance (After 100 washes) | AATCC100-2019 | Staphylococcus Aureus >99.9% Klebsiella Pneumoniae >99.9% Escherichia Coli >99.9% |
Water Repellency (After 100 washes) | AATCC22-2017 | Rating 100 |
US CPSIA Regulation | PASS | |
EU REACH Restricted Substances | PASS | |
EU REACH SVHC (Substances of Very High Concern) | PASS | |
PFAS (Perflorinated Compounds) | PASS | |
OEKO-TEX® Standard 100 Class II | PASS |
WASHING INSTRUCTIONS
We recommend hand washing the mask with cold water and mild detergent to maximize its performance. Please line dry after wash.
Hand Wash Cold
with mild detergent
Do not twist wring
Do Not Bleach
Do Not Iron
Line Dry
Do Not Dry Clean
Disclaimer
This mask contains Chitosan. It has undergone the AATCC 100 testing method and is proven to be antibacterial. Although it is not an anti-viral product, it will provide a basic level of protection. Follow the care instruction to avoid damaging the function of the mask. Please wash before use.