Smile HK 可清洗/重用綿質口罩

Smile HK

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.

Smile HK 可清洗/重用綿質口罩 Bubblegum
Smile HK 可清洗/重用綿質口罩
Smile HK 可清洗/重用綿質口罩 Lemonade
Smile HK 可清洗/重用綿質口罩
Smile HK 可清洗/重用綿質口罩 Pastel Mint
Smile HK 可清洗/重用綿質口罩Powder Blue
Smile HK 可清洗/重用綿質口罩 Lavender
Smile HK 可清洗/重用綿質口罩 Indigo

Mask Size Chart

Smile HK 可清洗/重用綿質口罩

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.


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


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


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.