The quality of the water, particularly its mineral content and ‘hardness’, can have a detrimental effect on the hair shaft and scalp. Hard water contains a high concentration of dissolved minerals, primarily calcium and magnesium.
The first sign of hard water damage is often dullness. The mineral build-up creates a rough texture on the hair cuticle, preventing light from reflecting off the hair and resulting in a dull, lifeless appearance. Another consequence is dryness and brittleness.