I wanted to give a true review so I decided to use the product for couple weeks first. I moved from CA to AZ and first thing I noticed even with water softeners my skin felt dry my hair started to REALLY shed like never before. I looked up what could be happening to my hair,, i tried everything and thought maybe the watering? I have used vit c showerheads before from another brand. I decided to try invigorated water because of the value of the extra vit c cartridges and price of the refills. Im happy to say the performance was better than expected. Hair has had significantly improved skin is less dry. I've already recommended this product to family and friends at work. Planning on becoming long term user of invigorated water.