FRIEND HOLDER has no crystals or chemicals . Just a scientifically - designed cartridge that reduces tar and nicotine two ways : First, a condensation chamber concentrates and accelerates tabacco smoke through tiny air holes, trapping harmful particles. Secondly, the Friend fibre filter removes mor tar and nicotine as they pass through. The result is a powerful double acting filtering system that leaves tar and nicotine trapped in a neat, no-mess disposable cartridge.