The real cause: it's the water
Most people blame hot water or harsh soap. But dermatologists increasingly point to the water itself as the primary cause.
Tap water contains two main skin irritants: chlorine and limescale (calcium and magnesium). Both damage your skin's protective barrier — every single shower.
How chlorine destroys your skin barrier
Your skin's hydrolipidic film is your body's first line of defence against moisture loss. Chlorine, as an oxidant, chemically breaks down this layer:
- Skin pH rises (becomes alkaline) → ideal for irritation and bacterial imbalance
- Ceramides (skin lipids) are depleted → moisture escapes faster
- Nerve endings become sensitive → itching, redness, tightness
What limescale deposits do to skin
When hard water dries on your skin, it leaves a microscopic calcium carbonate film that:
- Blocks moisturiser absorption — your cream sits on top rather than penetrating
- Raises skin pH further, increasing irritation risk
- Leaves a rough, powdery residue visible in hard water areas
British Journal of Dermatology (2020): Hard water significantly worsens atopic dermatitis symptoms in children and adults.
Why creams alone won't solve it
If you're fighting dry skin primarily with moisturisers, you're treating the symptom, not the cause. Every shower resets the damage. Using a shower filter alongside your skincare creates lasting results.
89% of Limpéa customers report softer skin within 7 days
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