I used to shower daily, but after slowly decreasing to 3 showers a week it's actually had a great improvement on both my skin and hair. I've read articles that have mentioned that it may be because showering too frequently strips your skin/hair of beneficial oils and/or bacteria but I'm not sure that's really the case. Either way, I've ended up both saving water and improving my health/appearance by showering less frequently, although it seems counter intuitive