Filters and tips are commonly used in smoking equipment, particularly for cigarettes and rolling papers. Filters, also known as cigarette filters or filter tips, are typically made of cellulose acetate or activated charcoal and are inserted into the end of a cigarette or rolled into a joint. Their purpose is to reduce the amount of tar and other harmful substances inhaled during smoking while also improving the taste and feel of the smoke. Tips, also known as crutches, are typically made of paper or cardboard and are rolled into the end of a joint or blunt. Their purpose is to provide a firm, stable mouthpiece for the smoker to hold onto and prevent small pieces of material from being inhaled. Tips can also help to ensure an even burn and prevent the joint from becoming too soggy or wet during smoking.

Filters and tips are available in various shapes, sizes, and materials, allowing smokers to customize their smoking experience according to their preferences. While they can be effective in reducing some of the harmful effects of smoking, it's important to note that they do not eliminate all of the risks associated with smoking and should be used in conjunction with other harm-reduction strategies, such as quitting smoking altogether or switching to less harmful alternatives like vaping or nicotine gum.