RootRecipe / Hair & Water

Let’s talk about hard water.

Your hair routine does not end with your shampoo. The water you wash with plays a part, too. Here is a clear, practical guide to what hard water is, what you may notice, and how to care for your hair.

First, the simple definition.

Hard water contains higher amounts of dissolved minerals, mainly calcium and magnesium. How hard your water is depends on your local supply.

01 / The basics

What is hard water?

As water moves through its environment, it can pick up minerals. Calcium and magnesium are the two main minerals used to describe water hardness. You may notice the effects around your home before you think about your hair.

In everyday life

Mineral marks on taps or shower glass, less lather from soap, and residue after washing can be clues. They are useful signs, but a water test gives you a clearer answer.

02 / The hair experience

What might you notice?

Everyone’s hair is different. These are reasons to pay attention to your wash routine, not a diagnosis that hard water is causing a hair problem.

Close view illustrating mineral residue around hair

01 / RESIDUE

A less fresh feel

Minerals and cleansing products can leave residue. Hair may feel less fresh than expected after a wash, especially when products are not rinsed thoroughly.

Person checking how their scalp and hair feel

02 / SCALP ROUTINE

Pay attention to your scalp

If your scalp feels uncomfortable, review your products and washing habits. Persistent itching, redness, or flaking is worth discussing with a qualified healthcare professional.

Close view of hair strands and their texture

03 / HAIR FEEL

Dryness or tangles

Hair that feels rough or tangles easily needs a gentler routine. Heat, styling, colouring, and handling can also affect how hair feels and whether strands break.

03 / What the research says

Good hair advice starts with honest information.

Hard water is real, and mineral deposits are measurable. Its direct effect on hair strength is less clear: small studies have reported different results. It would be misleading to say that hard water causes every case of breakage or hair loss.

What we know

Calcium and magnesium contribute to water hardness, and hard water can make soap less effective at lathering.

What needs care

Breakage has many possible causes. Hair shedding from the root is different from a strand snapping along its length.

What you can do

Find out your water hardness, cleanse gently, rinse thoroughly, and adjust your routine to how your hair actually responds.

04 / A practical starting point

How can you check your water?

You do not need to guess based on your hair alone. Start with the water coming from your tap.

Look around your bathroom

Notice recurring mineral marks on the shower glass, tap, or kettle. These can be clues, though they cannot tell you the exact hardness.

Check your local supply

Ask your water supplier or building management whether they provide a water quality report that includes hardness.

Use a hardness test

A suitable home test can give you a more useful reading. Follow its instructions and check the units used in the result.

RootRecipe shampoo shown as part of a simple hair washing routine

05 / A considered routine

Keep your wash routine simple.

RootRecipe Scalp Fortifying Anti-Breakage Shampoo is designed for a gentle cleansing routine. Its formula includes glycerin and panthenol, along with Disodium EDTA, an ingredient used to bind minerals in a formula.

Wet your hair thoroughly before applying shampoo.
Massage gently at the scalp; avoid rough scrubbing.
Rinse thoroughly and care for the lengths as needed.

A shampoo does not change the hardness of the water coming from your shower. If you are concerned about your supply, test the water and choose an appropriate water treatment separately.

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