Relieve the burden of our planet

Background and Mission

Mask has become our daily necessity since the outbreak of pandemic. According to the report from Journal of Environmental Science and Technology, the monthly global consumption of disposal masks reached the alarming figure of 129 billion1 and become a potential threat to the environment. With the aim of protecting the users’ health as well as the future of our earth, SkyPro started exploring the possibility to produce the mask with biodegradable material since mid-2020.

After series of tests and experiments, we have successfully developed a disposable mask that is composed of PLA. This mask possesses identical protection as standard surgical mask and could be decomposed over 90% in 130 days under certified experiment. This product is named as “Zero” so as to signify our emphasis and desire to bring “Zero” burden to our planet.

1. COVID-19 Pandemic Repercussions on the Use and Management of Plastics
Joana C. Prata, Ana L.P. Silva, Tony R. Walker, Armando C. Duarte, and Teresa Rocha-Santos
Environmental Science & Technology 2020 54 (13), 7760-7765
DOI: 10.1021/acs.est.0c02178

“Green Plastic”

Characteristics of PolyacticAcid (PLA)

Polylactic Acid (PLA), also known as “Corn Starch Resin”, possesses an innate high biodegradability due to its origin from renewable resources like corn, sugar beet, wheat and sweet potato. Starches and/or celluloses from these renewable resources can be used to produce PLA plastics after a series of sophisticated processes including fermentation, refining, dehydration, and polymerization; hence, PLA is also named as “Green Plastic”.

Traditional disposable mask is typically made from polypropylene (PP), a petroleum-refined product which requires over hundreds of years to be completely decomposed and would potentially impose serious damages to our invaluable natural environment and ecosystems. The use of PLA-made facemasks in substitution of PP-made facemasks would be the future trend with sustainable development of the planet being our top focus.


Design of Zero

The three-layer filtration system of Zero serves the purpose of filtering air-borne particles such as bacteria, viruses and dust, with the filtration efficiency over 99%. With a combination of strong protection, high comfortability and thoughtful design, Zero is definitely your best choice.

Water Resistant Layer

Filtering coarse particles such as droplets, pollen and dust

High-efficiency Filtering Layer

Filtering fine particles including PM0.1, bacteria and virus

Skin-friendly Layer

Hypoallergenic, smooth, comfortable surface





Test Reports

In order to comply with the international standard, we have sent Zero to Nelson Labs for the bacterial filtration efficiency (BFE), particle filtration efficiency (PFE) and viral filtration efficiency (VFE) test. Test results revealed that Zero has attained the filtration efficiency over 99%, which means that the protection level is equivalent to that of standard surgical masks.

Also, we have sent sample to SGS for component analysis to. The result indicated that all three filtering layers of Zero are 100% PLA material and biodegradable.

Bacterial Filtration Efficiency (BFE) Report

Particle Filtration Efficiency (PFE) Report

Viral Filtration Efficiency (VFE) Report

Component Material Analysis

Let’s Act Further to Protect Our Earth

By recycling the aluminum nose strip

You are encouraged to act further to conserve our environment by recycling the nose strip and work together to achieve our ultimate mission to bring “Zero” damage to the world.


Cut 2cm from top of the mask


Take out the aluminium strip


Place the strip into recycling bin for metal (Yellow Bin)

Media Zone

27 July 2021

Hong Kong Economic Times

取材自可降解物料之綠色口罩 為我們提供同樣的保護 為地球帶來不一樣的將來

SkyPro隆重推出一款以可降解物料為原材料的即棄口罩– Zero。本款口罩於特定環境下,可完全被降解及回歸大自然,取其化整為零之義,特此定名為Zero。

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20 August 2021

Sing Tao Daily

可降解環保物料 新一代即棄口罩


4 November 2021

Sina Hong Kong

可降解口罩 Zero 正式上市 堅守人類的健康 減輕地球的負擔

SkyPro自家研發,以可降解物料為原材料的即棄口罩 - Zero於2021年11月4日正式上市。根據權威科學雜誌的報告指出,在疫情肆虐期間,全球一次性口罩的月使用量高達1,290億個。

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