The cartridge is new and unopened. The showerhead was used for 2 years. The inside of the main body is slightly yellowed. ● Gentle purified water shower for skin and hair The calcium sulfite used in the purified water shower removes residual chlorine in tap water, which can cause a decline in the skin's ability to retain moisture, impaired moisturizing function, rough skin, dry skin, split ends, breakage, and itching. Residual chlorine damages the cuticle, which is made of protein, and also oxidizes and breaks down skin proteins. Removing residual chlorine can reduce irritation to the skin and hair. ● Recommended by the Japan Atopy Association The purified water shower has been certified as a product that is likely to be beneficial for those suffering from atopy and allergies, and is recommended by the Japan Atopy Association. ※ This does not guarantee the improvement of atopic dermatitis and allergic diseases. ● Approximately 30% water-saving effect ※ Measurement conditions (water-saving rate): Compared the flow rate at a discharge force of 0.6~0.65N with the conventional optimal flow rate of 10L/min, "Based on the Building Energy Consumption Performance Standards"