Chlorine and chloramine are both disinfectants added to municipal water, but they are different chemicals with different effects on skin and hair — and they need different filter media to remove.
Chlorine and chloramine are both disinfectants added to municipal water, and both are associated with dry, irritated skin and brittle, faded hair — but they aren't the same chemical, and they don't behave the same way in your shower. Free chlorine is more reactive and evaporates faster, especially in hot water; chloramine is more stable, lingers longer on skin and hair, and passes through many entry-level or vitamin-C-based filters that were designed for chlorine alone. If you live somewhere chloraminated — Stockholm is the relevant Nordic example — a filter needs a KDF-55-plus-carbon media combination, not just a chlorine-neutralising cartridge, to meaningfully reduce your exposure. None of this means your tap water is unsafe to drink; it means the specific compound your municipality uses to disinfect it matters when you're troubleshooting skin and hair symptoms.
Why Chlorine and Chloramine Get Lumped Together (and Why That's a Problem)
Most consumer content about "chlorine in tap water" uses the word as a catch-all for any disinfectant residual in municipal water. That's understandable — both chlorine and chloramine exist to do the same job, which is killing pathogens before water reaches your tap — but treating them as interchangeable leads people to buy the wrong filter.
Free chlorine (usually as hypochlorous acid or hypochlorite) is the disinfectant most people picture: it's reactive, it smells distinctly "pool-like" at higher concentrations, and it breaks down relatively quickly when exposed to heat, UV light, or organic matter. Chloramine is formed when utilities add ammonia to chlorine, creating a more stable compound that resists breakdown over longer pipe networks. Utilities increasingly choose chloramine specifically because it doesn't dissipate as fast — which is good for keeping water safe across a large distribution system, and less convenient if you're a hot shower away from that water each morning.
The distinction matters for filtration because the two compounds are chemically different and are neutralised by different mechanisms. A filter media that oxidises and binds free chlorine efficiently may do very little against chloramine's more stable nitrogen-chlorine bond. This is the single most common gap in generic filter marketing — "does this filter remove chlorine?" is often the wrong question to answer.
THE BASICSWhat Chlorine Does to Skin and Hair
Skin's outer barrier depends on two things staying intact: keratinocytes (the structural cells of the epidermis) and ceramides, the lipids that sit between those cells and lock in moisture. Chlorine is an oxidiser, and oxidisers are indiscriminate — they don't distinguish between the bacteria they're designed to kill and the lipids and proteins that make up your skin barrier.
Repeated contact with chlorinated water is associated with stripped natural oils and reduced sebum, leading to dryness, tightness, and flaking. It also disrupts the skin's surface pH, which reduces its ability to buffer irritants, and increases transepidermal water loss (TEWL) — the rate at which moisture escapes through the skin. For people with existing conditions like eczema, psoriasis, or rosacea, chlorinated water is a contributing irritant rather than a root cause.
Hair is affected through a related but distinct mechanism: chlorine can degrade the hair cuticle — the outer protective layer of the hair shaft — leaving strands more porous, more prone to tangling, and more likely to lose colour faster in chemically treated hair. Hot water intensifies all of this, since heat opens pores and increases the reactivity of chlorine on contact.
It's worth being precise about the actual concentrations involved. Swedish tap water typically carries a chlorine residual of roughly 0.2–0.4 mg/L at the tap — well within Livsmedelsverket's drinking-water limits, and well within the range that can strip your skin's natural oil barrier over a daily 10-minute shower. Being within regulatory limits and being enough to matter to your skin barrier are two different thresholds, and that's the crux of why this topic keeps coming up for sensitive-skin households even though the water is safe to drink.
THE MECHANISMBeing within regulatory limits and being enough to matter to your skin barrier are two different thresholds. Safe to drink and comfortable for sensitive skin are not the same question.
What Chloramine Does Differently
Chloramine produces broadly similar downstream symptoms — dryness, irritation, dull or brittle hair — but the mechanism and the practical implications differ in two important ways.
First, chloramine is more chemically stable than free chlorine, meaning it persists longer in contact with skin and hair during a shower rather than off-gassing or breaking down as quickly. Second, and more relevant for filter-shopping, chloramine's nitrogen-chlorine bond is not effectively neutralised by the same reduction chemistry that handles free chlorine well. Vitamin-C (ascorbic acid) based filter cartridges, which are popular, inexpensive, and genuinely effective against free chlorine, are considerably less reliable against chloramine because the reaction pathway is different.
Removing chloramine at the point of use generally requires a catalytic media — KDF-55 (a copper-zinc alloy) — paired with granular activated carbon, which together provide both the catalytic reduction and the adsorption needed to address chloramine's more stable structure. This is the reasoning behind combining calcium sulfite, KDF-55, and granular activated carbon in a single cartridge rather than relying on any one media alone.
If your municipality chloraminates its water — as Stockholm does, where Stockholm Vatten och Avfall adds a small amount of chloramine to the drinking water — a filter that only advertises "removes chlorine" is answering the wrong question. Why hair looks dull in Stockholm specifically can be a chloramine problem, not a shampoo problem, and it needs a chloramine-rated filter to address.
THE DIFFERENCEHow to Tell Which One You're Dealing With
You generally can't tell chlorine from chloramine by smell alone — chloramine is actually often less pungent, which paradoxically makes people underestimate it. The more reliable approach is to check your municipality's water quality report, which will state whether the utility uses free chlorine or chloramine (sometimes listed as "combined chlorine") as its residual disinfectant.
If you're noticing symptoms but aren't sure whether shower water is a meaningful contributor, our guide on the signs of too much chlorine in shower water walks through practical ways to check, including simple test strips that read total and free chlorine separately — a useful first step before assuming which compound you're dealing with.
How to test for chlorine in shower water →
CHECK YOUR WATERA Proportionality Check
It's easy for this topic to tip into alarmism, and that's not useful to anyone trying to make a sensible decision. Chlorine and chloramine are added to municipal water because they work — they are a major reason waterborne disease is rare in Sweden and across most of Europe. Swedish tap water meets Livsmedelsverket's standards, and using it to drink, cook, and shower is not a safety risk in the way that some content around this topic implies.
What filtration addresses is a narrower and more specific question: for people with sensitive skin, eczema, psoriasis, or colour-treated hair, is there a benefit to reducing disinfectant contact during a daily shower? The mechanisms described above — oxidative stripping of lipids, barrier disruption, cuticle degradation — are well-established water chemistry, and reducing contact with the irritant is a reasonable response for someone already managing a skin or hair condition. It is not a treatment or cure for any diagnosed condition, and it shouldn't be marketed or understood as one. It is a way of removing one known irritant from the daily routine.
A SENSE OF SCALEWhat This Means for Choosing a Filter
The practical takeaway is that "does it remove chlorine" is an incomplete question if your household is on chloraminated water. The right question is: what media does this filter use, and is that media validated against the specific compound your utility uses?
A cartridge built around calcium sulfite, KDF-55, and granular activated carbon addresses both free chlorine and chloramine, along with contributing factors like heavy metals and limescale that show up alongside disinfectant residuals in many municipal systems. For a full breakdown of how different filter technologies stack up against chloramine specifically, see our guide to activated carbon and chloramine. And if dull or brittle hair is your primary concern rather than skin, this root-cause guide walks through the hair-specific mechanics in more depth.
Does activated carbon remove chloramine from shower water? →
How chlorine in shower water affects hair and skin →
FILTERSVanliga Fragor
Is chlorine tap water bad for hair and skin?
Chlorine can strip natural oils from skin and degrade the protective outer cuticle of hair, contributing to dryness, irritation, and dull or brittle strands with repeated exposure. It's a contributing irritant rather than a direct cause of skin conditions, and Swedish tap water remains safe to drink and use under Livsmedelsverket standards.
Does chlorine in tap water damage hair permanently?
Chlorine's effects on hair — dryness, brittleness, faded colour — are generally a result of ongoing exposure rather than a single permanent change, and reducing contact through filtration or protective routines can help going forward. It does not reverse damage already present in hair strands, since hair is not living tissue that repairs itself.
How do you heal chlorine-damaged skin?
Reducing further chlorine and chloramine contact during showers, along with standard barrier-repair skincare (moisturisers with ceramides, avoiding hot water, patting rather than rubbing skin dry), addresses ongoing irritation. This is supportive care rather than a treatment for any diagnosed skin condition, and persistent issues are worth discussing with a dermatologist.
Is chlorinated water bad for your skin even within legal limits?
Regulatory limits are set for safety, not for skin sensitivity, so water can be fully compliant with Livsmedelsverket standards while still containing enough chlorine or chloramine to irritate sensitive skin during a daily shower. That's a separate threshold from drinking-water safety.
Do I need a different filter for chloramine than for chlorine?
Often, yes. Vitamin-C-based cartridges work well against free chlorine but are less reliable against chloramine's more stable chemical bond, which generally requires a KDF-55-and-carbon combination to reduce effectively.
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Nordisk Wellness Kit
Shower filter + filtered shower head. Triple media in the filter, carbon fibre in the head – two mechanisms for skin and hair.
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