Pure Water Filter: Filters Chlorine , pipe rusts, sediments bacteria. Made of multi-layers of fine melted polypropylene, it effectively removes the physical debris and impurities from your tap water(Micron rating: 5 Micron). Filter cartridge lasts up to 6 months depending on your water quality. Specification Made of 500 intricately layered fibres effectively removes 1-5 micron contaminated particles. Filtration: Reverse osmosis for impurities sediments. Vitamin C filter for chlorine(neutralization) and minerals such as calcium magnesium(chelation). Our showerhead has been clinically tested on a diverse group of women. The results showed that After just 4 weeks of use, our product significantly increases the hydration levels of the skin. After only 72 hours of use, the showerhead has been shown to reduce redness. After 4 weeks of use, it has also been proven to significantly improve acne breakouts. Pure Water Filter is for 3-6 months usage, depending on the water condition.