Have you ever washed your hands and the water feels a bit slimy? On the other hand have you ever washed your hands and it is difficult to make a lather?
You probably have experienced both these situations. In the first case you were exposed to SOFT water and in the latter case you washed your hands in HARD water.
Hard water contains much more carbonate and sulphate chemicals (ions actually) and it is these that make water hard ... hard water is responsible for the furring of electrical coils in a kettle for example. In this situation repeated boiling of water results in precipitation of the carbonates and sulphates.
Another example of hard water is the scum line left behind after a bath. The scum line doesn't mean you were extra dirty. The soap reacts with the dissolved salts to create an insoluble deposit.
Most housewives would have used a softening product to add to the washing machine towards the end of a wash cycle. This kind of product is designed to soften the rinse water which does result in a brighter and softer feel to clothes coming out of the washing machine.
Hair washed in soft water would tend to shine more than hair washed in hard water.
The conclusion: Soft water is preferred in general for good clean-looking clothes and bodies.
Read more about soft and hard water.
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