Hair damage is a universal concern, with a staggering 80% of women experiencing some form of hair damage, according to research done by L’Oreal’s Kerastase. Whether it’s due to chemical treatments or environmental factors, damaged hair is a prevalent issue affecting many individuals. However, one often overlooked factor contributing to this damage is the presence of calcium in water.

How Does Hard Water Affect the Health of My Hair?

Hard water, which contains high levels of minerals like calcium, can wreak havoc on your hair health. When you wash your hair with hard water, the calcium ions bind to the negatively charged surface of the hair shaft. This interaction causes the hair cuticles to lift, making the hair more porous and susceptible to damage. Additionally, when hard water containing calcium comes into contact with hair, it can leave behind mineral deposits, causing buildup on the hair shaft. This buildup can make hair feel rough, dull, and difficult to manage. Additionally, the presence of calcium can interfere with the effectiveness of hair care products, making it difficult to achieve desired results.

The Cycle of Damage:

Damaged hair is already more porous than healthy hair, and when exposed to hard water, it absorbs even more calcium. With each wash, the calcium accumulates, further exacerbating the damage. As a result, hair loses its shine and feels rough to the touch. Internally, the accumulation of calcium causes the hair shaft to become rigid and stiff. This rigidity compromises the elasticity of the hair, making it more prone to breakage and split ends. 

How to combat hard water damage? 

Dealing with hair damage caused by hard water can be frustrating, but with the right treatments, you can restore your locks to their former glory. One such solution is the new Kerastase Premiere Hair Care Dual Repair Line, now available in salons! 

How it Works

The Kerastase Premiere Hair Care Dual Repair Line works by deeply penetrating the hair shaft to remove calcium buildup and reestablish broken links within the hair’s structure. With regular use, this powerful formula strengthens the hair from the inside out, restoring flexibility, resilience, and shine.


Citric Acid: A key ingredient in the Premiere line, citric acid plays a crucial role in eliminating calcium buildup on the hair shaft. By removing excess calcium, citric acid helps to restore the hair’s natural flexibility and strength. Additionally, it facilitates the reconnection of broken links between keratin chains, promoting a stronger hair structure both internally and externally.

Glycine: Known for its remarkable ability to reduce breakage, glycine is another essential ingredient in the Premiere line. Not only does glycine strengthen the hair, but it also helps to neutralize dullness and stiffness, leaving your locks looking healthier and more vibrant.

image of hair after hard water treatment
image showing the new products part of kerastase premiere line.

In conclusion, the presence of calcium in water can have a significant impact on the health of your hair. By understanding how hard water affects your hair and taking proactive measures to protect it, you can maintain healthy, lustrous locks despite environmental challenges. So, the next time you ask yourself, “Should I be worried about calcium in water?” the answer is yes, but armed with knowledge and the right hair care routine, you can keep your locks looking their best.

Click here to book your next appointment! 

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