We recommend you use a fresh new sponge with each application. A previously used sponge can harbor bacteria (either removed from your skin during the AO2 application or aerosolized in the bathroom). If you reuse the same sponge later you are risking adding bacteria back to your skin surface.

Your sponge is also compostable so you don’t need to worry about filling up the landfill.  Toss them in your compost or the trash as they will biodegrade.

For the tray, you can reuse it. We recommend you wash the trays with soap and water and store them in a drawer or cabinet. Because they are not as porous as the sponges, a quick clean between uses will minimize any bacterial growth.

AO2 Clear has a shelf life of 1 year if unopened and stored in a cool place. You will see the manufacturing date of your A02 on the back of each pouch on the bottom.

Once you open your A02 Clear pouch, it has a maximum efficacy of 20 days. It can be stored in your bathroom or the refrigerator depending on your preference.

Each pouch contains 30 applications. We recommend you use AO2 Clear twice daily for 3o consecutive days for maximum benefit.  Also remember to use a fresh clean sponge with each applications.

The sponges are sized to hold the correct amount of AO2 Clear for each application making it easy to administer an equal amount twice daily for two weeks. 

The sponges have also been designed to give you gentle exfoliation that can help clear your pores of dead skin cells and make way for our oxygen nanobubbles to get to work. If you notice any persistent redness or irritation it is likely that your skin needs less exfoliation and we recommend switching to a cotton round or fine gauze instead.