Our Filters were designed to trap heavy resin and tar particulates. Please keep in mind that the overwhelming majority of your material is vaporized when inhaled and any amount that would remain in the filters is negligible. Simultaneously, removing resin, tar and contaminants from the smoke/vapor can actually allow your lungs to absorb more of the good stuff, which would make up for any miniscule amount that may be lost.  Many consumers say that the Filters overwhelmingly enhance their smoking/vaping experience.