Hard Water and Textured Hair in Germany: What Nobody Tells You
A few weeks after moving to Munich, I found myself standing over a bathroom sink with a five-litre bottle of distilled water, preparing to pour it over my entire head of locs.
Was it elegant? No. Did it work? I still couldn't tell you with certainty. But it was the best answer I could put together from scratch — assembled from late-night forum threads, no stylist to ask, nothing on any German shelf designed for this specific problem. Just me, a bowl, and a plan made from internet fragments.
If you have textured hair and you've moved to Germany, there's a reasonable chance you've had your own version of this moment. Something in your routine stops working — not dramatically, just gradually. Your hair feels drier. Products that used to work no longer do. You switch things up, but nothing quite sticks.
Before you overhaul your entire routine, it's worth understanding one variable that rarely comes up in mainstream haircare advice: the water coming out of your tap.
Parts of Germany have notably hard water, and for textured hair, that matters
Water hardness refers to the concentration of dissolved minerals — primarily calcium and magnesium — in your water supply. It varies significantly across Germany, and the differences matter more than most haircare content acknowledges.
Germany's water hardness varies significantly across different regions. Southern and eastern cities tend to have harder water due to the limestone composition of the local geology — Frankfurt sits at around 20°dH and Munich at around 16°dH, both in the hard category. Stuttgart, by contrast, is medium at around 11°dH. Berlin comes in at around 19°dH. If you want the exact figure for your postcode, wassertipps.de publishes supplier data by location.
For straight hair, hard water is largely an aesthetic inconvenience — a bit of extra buildup, some dullness. For textured and natural hair, the effects are more significant. Textured hair — whether wavy, curly, or coily — has a more complex surface structure and tends to be more porous, which means it absorbs minerals from hard water more readily. Over time, this mineral buildup can:
Block moisture from penetrating the hair shaft.
Make hair feel brittle, rough, or stiff after washing.
Cause products to sit on top of the hair rather than absorbing into it.
Leave protective styles feeling heavy or looking dull faster than expected.
Make it genuinely difficult to identify what's working and what isn't, because the water itself is a variable you may not have accounted for
This last point is significant. Hard water doesn't announce itself. It just quietly undermines your routine until you're convinced the problem is you — your technique, your products, your hair.
It isn't.
Why doesn't this come up in most haircare advice
The bulk of online haircare content — YouTube tutorials, Reddit threads, TikTok routines — originates in the United States or the UK. Much of it assumes a water supply that behaves differently from what you'll find coming out of a tap in Munich or Frankfurt. Recommendations that work well in one water environment don't always translate.
German-language haircare content for textured hair is still limited. And mainstream beauty retail in Germany rarely acknowledges that textured hair exists as a mainstream need, let alone that it has specific requirements in a specific water environment.
This leaves most women doing exactly what I did: assembling answers from fragments, testing things that may or may not apply to their situation, and building routines without the baseline information that would make the process significantly less exhausting.
What actually helps
There's no single solution, partly because water hardness varies by city and even by postcode. But there are approaches worth knowing about.
Check your local water hardness. Most German water suppliers (Wasserversorger) publish hardness data online. Search for your city name plus "Wasserhärte" or use wassertipps.de to find a current figure. Knowing your number gives you useful context for everything else.
Clarifying regularly. Mineral buildup responds well to clarifying treatments — products designed to remove buildup rather than simply cleanse. If you haven't tried a clarifying wash as part of your routine, it's worth experimenting with, particularly if your hair has felt heavy or unresponsive to moisture recently.
Apple cider vinegar rinses. A diluted ACV rinse (roughly one part vinegar to three or four parts water) can help dissolve mineral deposits and restore some porosity to the hair. It's low-cost, widely available, and has a reasonable amount of community evidence behind it for textured hair specifically. The smell dissipates once your hair dries.
Water filters. Shower filters that reduce mineral content are available. They vary in effectiveness and price, and results depend partly on your baseline water hardness. Worth researching before committing.
Distilled or filtered water as a final rinse. The unglamorous solution I arrived at in Munich. It works because distilled water contains no minerals, so a final rinse after washing removes some of what the tap water deposits. Not a long-term daily solution for most people, but useful for understanding whether hard water is actually a factor in what you're experiencing.
Product formulation. Some products are specifically formulated to work in hard water conditions, or contain chelating agents — ingredients like EDTA or phytic acid that bind to minerals and help prevent buildup. These are worth looking for if you're rebuilding your product stack.
What does this have to do with why we're building sparrow
One of the things that came up repeatedly when we started talking to women with textured hair in Germany was a particular kind of frustration — not anger, exactly, but a quiet exhaustion. The sense that figuring out something as basic as a hair routine requires an unreasonable amount of effort. Research, experimentation, importing products, starting over.
Hard water is one piece of that. It's also a useful illustration of a broader problem: the guidance that exists for textured hair in Germany is patchy, often irrelevant to the actual conditions women are dealing with here, and almost never assembled in one place.
sparrow is being built to change that — starting with understanding what women here are actually experiencing. If you have a version of the distilled water story, or you've found something that genuinely works for your hair in Germany, we'd like to know.