The Proof

You have questions. We like that.

Real filters. Customer accounts. Measured results. Take a closer look at what each one can tell you.

A map of real showers.

Original customer filters, by location. Open a photo for the full account, or look up your regional water.

Start with your water.

Look up regional water information by ZIP code.

State-level background, not a test at this home. Treatment and hardness can vary by utility and building. Check your utility’s current water quality report for local details.

Select a photo to explore

Real customer filters, tap a pin

An individual customer account. Filter colour is not a measurement of chlorine removal or remaining filter life.

A closer look, from home.

Filter photos, where they were used, and how long they were in the shower. Open a record for the full story.

An individual customer account. Filter colour is not a measurement of chlorine removal or remaining filter life.

Your shower. Your way.

Choose the fit. Find your colour. We’ve thought about the water.

Time for a fresh filter? Find your refills.

Different questions. Different evidence.

A filter photo shows what was caught. Testing answers a different question. Here is how we keep the two separate.

Laboratory testing

What happens to chlorine?

99.9%+

Chlorine reduction in independent laboratory testing.

Source: Second Shower independent laboratory testing. Results apply to tested conditions; water conditions and use vary.

What happens to chlorine?

Vitamin C neutralizes chlorine through a chemical reaction. The sediment layer has a separate job: catching particles.

This result does not establish water hardness, every contaminant level, or the result at every home. Second Shower does not soften water.

Chlorine reduction
99.9%+
0%100%
Chlorine reduction
Reduction99.9%+
EvidenceIndependent laboratory testing
ScopeTested conditions; individual water conditions and use vary.

Source: Second Shower independent laboratory testing. Results apply to tested conditions; water conditions and use vary.

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Clinical measurement

What changed in the study?

+26.71%

Measured facial skin hydration after two weeks.

Independent human-application study: 22 women, two weeks, P < 0.05, no control group. Instrument-measured facial skin hydration. Individual results vary.

What changed in the study?

The reported figure is an instrument-measured change in facial skin hydration after two weeks in a study of 22 women.

The study had no control group. It is separate from customer photos and the study’s perception survey. It is not a guarantee of an individual result, a treatment claim, or a measured hair result.

Independent human-application study: 22 women, two weeks, P < 0.05, no control group. Instrument-measured facial skin hydration. Individual results vary.

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Certified component

What is certified?

NSF/ANSI 42*

We use an NSF/ANSI 42 certified filter.

*Micron PP sediment filter certified by NSF/ANSI 42 standards.

What is certified?

The certification applies to the micron PP sediment filter component. It is not whole-showerhead certification.

The chlorine reduction result comes from separate independent laboratory testing. A darker filter does not measure chlorine removal or remaining filter life.

*Micron PP sediment filter certified by NSF/ANSI 42 standards.

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Your filter has a story, too.

Share a photo, where you use it, and how long it has been in your shower.

Find your shower