HERB® Micro Filter features an innovative filter that contains over 10 herbal herbs and enzymes (primrose, licorice, green tea, etc.) that collect and reduce the dangerous substances of cigarettes. At the same time, it contains microsilica which is spread on specially treated fibers and surrounds the filter externally, thus trapping the collection of harmful substances inside the filter without allowing them to reach the smokers mouth. The construction of the filter also helps to destroy free radicals. In this way, HERB® Micro Filter absorbs tar and nicotine without altering the taste of the cigarette at all. Each filter is effective for approximately 15-20 cigarettes depending on the tar and nicotine content of each cigarette.