Accessible Safe Disinfection

The Mission

Design a more efficient, safest, eco-friendly and replenishable alternative to personal disinfecting.



The Impact

- Red Dot Design Concept Award finalist 2021.

My Role

I was managing the project progress and contributing to the research, sketching, prototyping, CAD, rendering, animation, and technical specification.

Team: Sangyu Xi, Lee Cusolito, and Xingyi jiang.

Problem statements

To slow the transmission of the coronavirus, people are actively taking actions, such as using soap and water or hand sanitizer while on the go to sterilize their hands.However, the media and research have unveiled the following problems of the existing hand sanitizers:

Overdose alcohol

A sanitizer containing 62% ethyl alcohol equals a 120-proof drink, which can be dangerous to kids.

Plastic pollution

Millions of sanitizer bottles are produced, adding to the billions of tons existing.


Sweat and filth on your hands will dilute the alcohol and reduce its effectiveness significantly.

Awful experience

The alcohol smell, the stickiness, the dried skin after applied, the cliche packaging…

Water contamination

Tricolsan and triclocarbon from hand sanitizer pollute water bodies.

Aqueous ozone

Through research, we discovered that aqueous ozone, which is produced by the electrolysis method (below), will extract ozone, an effective hygiene gas, from water, and does not allow ozone to escape the water in a poisonous gas form until it has degraded into oxygen.

Value propositions

We conducted 3 rounds of user interviews with 11 people of different ages, gender, marital status, professionals, and income. Then we pinned out their pain points and ranked them into value propositions.


safe ingredients


better experience


no cliche


deactivate 99.9% of germs and viruses (including coronavirus)


less plastic
less CO2 footprint
no water contamination

Customer discovery


Keeping her from putting fingers in her mouth after applying hand sanitizer is so challenging...the whole meal smells like alcohol.


The cracking appeared...and then it began to bleed. Applying hand sanitizer was literally a pain for me.

Customer clerks

I know personally that my hands don't smell so good, but there really weren't any other options.

Aesthetic inspiration

White communicates hygiene and trustworthiness; translucency and round corners convey the softness; fluent and flat form factor benefits portability...finally the simple and honest design is where I'm going for.

The final design consists of 3 main parts: White body, replaceable resin cartridge, and water tank.


The assemble strategy aWe experiment with an existing aqueous ozone mister that shares the same capacity of battery and water tank with mist. and find out that mist. can last at least 3 days when it has been fully charged and with maximum water.llows the user to screw off the screws and take off one side plate to do the repair.

How the technology works

To promote sustainability, mist. uses the authentic appearance of cardboard with minimal plant-based ink for the package, to reduce the environmental impact and ecological footprint.

The resin cartridge absorbs the calcium and magnesium ions to soften the water, in order to increase the longevity of the units.

When the filtered water enters the electrolysis unit, the electricity will split the oxygen ions from the water and combine 3 of them over the membrane to form ozone.

Hold your mist with nozzle away from you.

Press the power button.

Aim the nozzle towards your hand and pull the trigger with your index finger to spray the mist.

Put the device away.


To promote sustainability, mist. uses the authentic appearance of cardboard with minimal plant-based ink for the package, to reduce the environmental impact and ecological footprint.