Gradual smoking cessation system in 4 weeks. It is based on the use of a different special filter each week, depending on the percentage of tar and nicotine it retains. Reduction stages : red filter - 30% discount orange filter – 60% off yellow filter – 70% discount white filter - 80% discount Instructions for use Week 1 Use the red filter with your desired cigarette. This filter reduces tar and nicotine by at least 30%. Week 2 Use the orange filter. This reduces tar and nicotine by at least 60%. Week 3 Use the yellow filter. This reduces at least 70% of the tar and nicotine. Week 4 Use the white filter, reducing at least 80% of the amount of tar and nicotine.