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No more itchy skin after showering!

Fight hard water and avoid itchy scalp

Lisa M. - Holistic Health Expert

I July 23, 2025

The moment that changed everything

What begins as a perfectly normal morning ends in frustration for many: an itchy scalp, dry skin, brittle hair – despite good care products . Sarah felt the same way. She searched for the cause for a long time, trying shampoos, creams, and treatments. Nothing helped.

It was only thanks to a tip from her friend that she discovered the real cause: the water. More specifically, the hard, lime-containing tap water that comes out of the tap in over 70% of German households – full of residues that disrupt the balance of the skin and scalp.

Limescale - The truth about your tap water

The scalp itches after showering – this phenomenon is not a coincidence, but the result of a chemical reaction that occurs millions of times a day in German bathrooms.

Imagine your scalp is a delicate garden. Every day, you water this garden with water you consider pure. But what if this water is full of invisible "weed killers"?

This is exactly what happens when hard water hits your scalp. German tap water has an average hardness of 15-25 degrees Celsius—rich in calcium and magnesium ions. Combined with shampoo surfactants, this creates insoluble soap residue that forms a film on your scalp.

"Hard water reduces the skin's ability to retain water," explains Dr. Petra Hoffmann, a dermatologist at the University Hospital of Hamburg. "The minerals disrupt the skin's natural barrier function and lead to dryness, irritation, and chronic itching. "

Problem Two - The Chlorine Trap

When disinfection becomes a burden
Even more insidious is the chlorine in our tap water . This powerful oxidizing agent not only destroys bacteria but also attacks the natural oils and proteins in your scalp . The skin barrier is weakened, the pH shifts, and your scalp loses its protective function .


28% of people living in hard water areas suffer from chronic skin problems, compared to only 19% in soft water areas.

Understanding the symptom spiral

What begins as a harmless itch quickly develops into a vicious cycle. You scratch because your scalp itches. Scratching creates micro-injuries that provide entry points for bacteria and fungi. The inflammation intensifies, and the itching worsens.

Typical symptoms of an itchy scalp after showering

Burning, itchy feeling after showering

Irresistible itching despite washing your hair

Redness and irritation at the hairline

Chronic dandruff and hair breakage

Sleepless nights due to constant itching

Why conventional solutions fail

If you suffer from an itchy scalp, you probably resort to the obvious solutions: changing your shampoo, using expensive scalp treatments, washing less or more often. But all of these measures only treat the symptoms, not the cause.

"It's like trying to mop a flooded basement while the faucet keeps running upstairs," explains Dr. Hoffmann. "Unless the source of the problem—the hard, chlorinated water—is addressed, even the best skincare products can only provide temporary relief."

The solution lies not in what you put on your scalp – but in what you take away from your water.

The activated carbon revolution

Activated carbon isn't simply burnt coal. It's a high-tech material with a fascinating microstructure. One gram of high-quality activated carbon has a surface area of up to 1,500 square meters—crisscrossed by millions of microscopic pores that act like traps for pollutants. The process is called adsorption : chlorine molecules are held to the activated carbon surface by electrostatic attraction. Within seconds, the chlorine is removed from the water without harmful byproducts.

auris Sonic: The solution that changed Sarah's life

The Auris Sonic is the result of over two years of research . Water technology experts, dermatologists, and engineers collaborated to develop the perfect solution for itchy scalps caused by hard water.

The CarbonCore™ technology

At its heart is the patented CarbonCore™ filter technology . Unlike conventional filters, the Auris Sonic combines four different types of activated carbon:

  • Pre-filtration: Coarse-pored activated carbon removes larger particles
  • Chlorine removal: Catalytically activated carbon removes over 99% of the chlorine
  • Fine filtration: Micro-pulverized activated carbon binds the smallest organic molecules
  • Polishing: Final layer removes special chlorine compounds

Installation: Easier than you think

Installation takes less than 5 minutes and requires no tools:

  • Unscrew the shower head

  • Insert Auris Sonic between hose and shower head

  • Tighten both sides by hand

  • Rinse quickly – done!

  • Changing the filter: Simply unscrew the lower part

Address the problem where it arises.

Itchy scalp

If your scalp burns, itches, or feels flaky, the problem is often not just the shampoo—it's the water. Residues like chlorine and limescale disrupt the natural pH balance and weaken your skin's barrier.
The result: irritation, inflammation, and constant discomfort. The good news: You can change this – right at the source.

Dry skin

Do you regularly care for your skin, but it still feels tight? The cause could be tap water, which destroys important lipids and leaves your skin vulnerable. Dry patches, itching, and irritation are often signs of a compromised skin barrier. With the right filtration, you can protect your skin even while showering.

Thin hair

Fine, brittle hair often starts at the scalp. When harsh substances in water irritate your hair follicles, growth is slowed – and your hair loses strength . Instead of endless care products, your hair needs one thing above all: protection while washing. The first step to healthier hair begins with the water you use every day.

Significant improvement of your (scalp) skin for stronger and healthier hair.

Discover your new shower routine

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Protects the skin barrier and supports collagen formation

Relieves itchy and tight scalp

Protects the skin barrier and supports collagen formation

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