How Does Chlorine in Your
Shower Water Affect Your Skin?
Chlorine helps keep municipal water safe — but what happens when your skin is exposed to it every day? We looked at what the research actually says.
The Short Answer
Chlorine is added to municipal water to control harmful microorganisms and keep our water supply safe. Research shows that repeated exposure to chlorinated water during showering and washing can contribute to skin dryness, irritation and a weakened skin barrier for some people, particularly depending on concentration, water temperature and individual skin characteristics. The effects can vary, and not everyone will notice changes.
Why Is There Chlorine in Your Shower Water?
Chlorine is widely used in municipal water systems around the world to disinfect water and control harmful bacteria, viruses and other microorganisms. It plays an important role in keeping public water supplies safe as water travels through treatment facilities and distribution networks.
By the time it reaches your home, chlorine is present within regulated levels that are considered safe for everyday use. While this is essential for public health, it also means that chlorinated water comes into direct contact with your skin and hair every time you shower.
What Does Chlorine Actually Do to Your Skin?
Several dermatological studies have looked at how chlorinated water can affect the skin, particularly with repeated exposure. Here are the key findings.
Can disrupt the
skin barrier
Chlorine can strip natural oils and lipids from the skin's surface, which may weaken the skin barrier and make it more susceptible to dryness and irritation.
See supporting research →
May increase dryness
and tightness
Repeated exposure to chlorinated water has been linked to increased transepidermal water loss (TEWL), which can leave skin feeling dry or tight after washing.
See supporting research →
Can contribute to
sensitivity and irritation
For some people, chlorinated water may trigger irritation, redness or worsen existing skin conditions such as eczema, particularly with frequent exposure.
See supporting research →
Could Your Shower Water
Be Affecting Your Skin?
It's not always obvious when water is a contributing factor, but there are some common signs that may indicate your skin is reacting to chlorinated water:
- Skin feels tight or dry after showering
- Persistent dry patches despite regular moisturizing
- Increased sensitivity or irritation
- Hair that feels dull or coated
- Changes that began after moving to a new area or home
None of these symptoms are unique to chlorine and can have other causes. But if they persist, your water may be worth considering.
Does Chlorine Affect Everyone the Same Way?
The effects of chlorinated water can vary depending on skin type, age, and existing skin conditions.
| Skin Type | Potential Effects | What to Watch For |
|---|---|---|
| Normal skin | Usually well tolerated, but may still experience dryness with frequent exposure | Mild tightness or dryness |
| Dry or sensitive skin | May be more prone to irritation and increased dryness | Persistent dryness, redness, itchiness |
| Children | May be more vulnerable due to a thinner skin barrier | Dryness, irritation |
|
Existing skin conditions (e.g. eczema) |
May trigger or worsen symptoms in some individuals | Increased flare-ups or irritation |
Chlorine Isn't the Only Thing in Shower Water
While chlorine is a major focus, shower water can also contain other substances that may affect your skin:
What Can You Do About Chlorine Exposure?
There are several practical ways to reduce your exposure and support healthier-looking skin:
showers Hot water can increase dryness, regardless of water quality.
What Shower Filtration Can — and Cannot — Do
Shower filters are designed to reduce certain substances in your water, but it's important to understand their limitations.
- Reduce chlorine at the point of use
- Reduce sediment, rust and particles (depending on the filtration media)
- Improve the overall feel of your shower water
- Completely remove dissolved hardness minerals (that requires a whole-home water softener)
- Treat acne, eczema or other skin conditions
- Replace your regular skincare routine
Why We Looked More Closely at Aquavai
When reviewing shower filtration options, we were interested in systems that specifically address chlorine, while also targeting other common skin contaminants. Aquavai uses a proprietary dual-filter system with five filtration stages at the point where your shower water reaches you.
A Closer Look at the Aquavai Filtration System
The Bottom Line
Chlorine plays a vital role in keeping our water supply safe. But research shows that repeated exposure to chlorinated water can contribute to skin dryness, irritation and a weakened skin barrier for some people. Reducing chlorine at the point where you shower is a practical step to consider, alongside a consistent skincare routine and other healthy habits.