FUNCTION:it will absorb almost 90% of the tar and reduces nicotine.Can effectively filter the tar smoke, nicotine ancient and a carbon acid, etc., effectively relieve the symptoms caused by smoking, such as sputum, shortness of breath, significantly reduce the smoke on the teeth.Lessens damage to the gums. SAFETY:Tobacco Filter Tip Mouthpiece using laws of physics, contains no harmful chemical stuffs. A smoker does not detect any changes in the taste of the cigarette since the method used is mechanical smoke purification. PROTECT FAMILY HEALTH:Every filter may holdback 25.7mg dry tar for one piece of smoke, a healthy somking environmental science. Filters stay in mouth comfortably and food grade plastics prevents your fingers from getting discolored. BOX-PACKEDEasy to store.Each filter is good for 1 to 3 cigarettes. Stop using before the tar leaking out. Filters stay in mouth comfortably and food grade plastics prevents your fingers from getting discolored.