Low-pollution enjoyment thanks to actiTube activated charcoal tips for self-twisting! The advantages of actiTube Slim activated charcoal tips: the taste is improved, the lungs are less stressed, scratchy mixtures taste smoother. Each tip should be used only once! At outside temperatures below about +5°C, condensate forms on the activated carbon – instead of being filtered. This can lead to clogging of the tip.