I didn't know that Roux Porosity control would counteract hard water? I'll have to look that up myself.

I dont' know if hard water actually cause higher porosity, as it casues it to ACT like its higher porosity. For me, my hair gets producty and frizzy. And just in general doesn't behave well.

I agree with lucky curls. When I had a water softener, it softened all the water, because it was the next thing in line after the pump. Then it went to the hot water tank. The softening system we had (iron removal and a salt tank) didn't depend on the temperature of the water to work.

Now we have almost as hard city water with no softener. Man I wish I'd kept that salt tank lol.

I had no idea how much water affected anything until I moved into an area with problem water. My whites are gray and nothing ever gets soft! its always stiff. Back home, I could get the cheapest wal-mart sheets and just wash them a few times, use fabric softener and they'd be awesome. Here, its like sleeping on cardboard! LOL.
Grand Goobah Caedran, Aqueous Infusion of Demulcents, Order of the Curly Crusaders

Fia 2cFi, fine texture, med porosity CG 5-29-09 * My hair loves protein! Currently using : DermOrganics Shampoo and IHM, G2B Kinkier Mousse, Re:Coil VMM, Anything Spiral Solutions! MO Sealing. Coconut Oil Pre-Poo, once a month Hard Water shampoo. Avoiding Glycerin in finishing products.