Years ago I was suffering regularly from asthma and hayfever. I got the idea to produce little filters that can be put in the nose, to prevent unwanted particles that are present in the air, to enter my nose. After several years it has become clear that more than half of the users of "Nosecaps" no longer show allergic reactions to pollen. In addition, Suriname people who move to the Netherlands start suffering from hayfever after 6 months, however when using Nosecaps the symptoms disappear.

This is a new and a used nosecaps after 10 hr in a mid size city.

The expiry of Nosecaps perfect filters will depend on the concentration of pollutants in the environment in which you are situated and when the filter material begins to become discolored or you begin to experience allergic reactions you will know that it is time to discard the old and insert a new. So as you can see there is no average time period of use. Regarding the odors of Paint, Perfume, Gasoline etc. The filter will not filter out the odor but it will filter out the harmful particulates within those exposures. Our filtration material is composed of a Biodegradable cellulose filtr