Packshot P1 entra aqui
TWO-STAGE OXIDANT SEALFULL 2.2 GPM PRESSURE5-MIN INSTALL
P2
P3
P4
Tiras
Caixa

It wasn't you. It was the water.

Removes free chlorine AND chloramine. Then hands you the proof.
Solo
Showerhead + Oxidant Seal core + 25-strip test kit
$129
 MOST POPULAR · SAVE $52
Year of Clean Water
Showerhead + 4 cartridges (12 months) + test kit
$231$179
Whole Home
2 showerheads + 6 cartridges + 2 test kits
$394$299
Free with your order
FREE · $19 VALUE25-Strip 16-in-1 Test Kit
FREEYour City's Water Report Card
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5-Minute Install
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softer-feeling hair calmer, less tight skin full 2.2 GPM pressure chloramine actually covered proof on a strip, not a promise

time to upgrade from your old showerhead

City water is disinfected with chlorine and chloramine. Great for pipes. Not great for the largest organ of your body.

protect your skin
less of the tight, itchy after-shower feeling
protect your hair
stop stripping it in hot chlorinated water daily
keep your pressure
2.2 GPM, the full-pressure US standard
verify it works
dip two strips, watch the chlorine pad tell the story
Foto: chuveiro comum jorrando
ORDINARY FILTER
Foto: Litmus jorrando (P3)
LITMUS

So you bought a filter. And nothing changed.

It probably ran on ordinary activated carbon, and carbon traps. It is a sponge, and a sponge barely touches chloramine even when it is brand new. If your city disinfects with chloramine, and over 1 in 5 American homes get it, your old filter was never going to work no matter what you paid.

The Oxidant Seal doesn't trap. It converts. KDF-55 and calcium sulfite neutralize free chlorine on contact, then a dedicated Vitamin C stage takes apart the chloramine that carbon-only filters ignore.

$149 value From $129
Seal Your Shower

Roughly 98% of US homes get chlorinated water. Over 1 in 5 get chloramine, the one your old filter missed.

Here is what is actually inside the cartridge, and what each part does:

calcium sulfite
neutralizes free chlorine on contact, even in hot water at full flow
KDF-55
copper-zinc alloy that converts chlorine and holds back dissolved metals
Vitamin C stage
ascorbic acid, the chemistry cities themselves use to de-chloraminate water
coconut carbon + mesh
polishes odor and catches sediment before the spray plate

no tools, no plumber, renter-safe

your best shower in three steps

1.

unscrew the old head

Foto install 1
2.

twist on your Litmus

Foto install 2
3.

dip the two strips

Foto das 2 tiras (REAL)

Everything you need comes in the box. Standard half-inch US fitting, plumber tape included, under five minutes.

we did the reading

We read 55 reviews of this category.
Here's the pattern.

Foto lifestyle 1.4 (cabelo)
Foto lifestyle 1.5 (pele)

"Neither have given any noticeable results. My hair is still dry and my skin still itches."

Real review of two budget filtered showerheads, r/Haircare. This is the gap the Oxidant Seal exists to close.

"Spent a fortune on skincare before realizing the problem was coming out of my showerhead."

Real review, skincare community. The water comes first. Everything else is damage control.

100

The Founding 100. The first 100 customers who send us their two-strip photo and their honest take, good or bad, get their first replacement cartridge free. Their words become this section. Proof, not adjectives.

Litmus vs the filter you already tried

LITMUSORDINARY FILTERED SHOWERHEADS
Dedicated chloramine stage (Vitamin C)Rarely
KDF-55 + calcium sulfite conversion coreSometimes
Test kit in the box to verify it works25 strips
Money-back window90 days30 days or less
Subscription requiredNoOften

the test-it-yourself 90

Don't trust us. Test us.

Run the strips the day it arrives, then again a week in. If you do not like what the pads show, or you simply do not like the shower, send it back within 90 days for a full refund. Return label on us.

Start The 90-Day Test

asked and answered

I already tried a shower filter and it did nothing. Why would this be different?
Because it probably ran on carbon alone, and carbon barely touches chloramine. The Oxidant Seal runs two dedicated conversion stages, then hands you 25 strips so you can watch the difference instead of taking our word for it.
How do I know this isn't the same snake oil?
You don't have to know. You test. Dip one strip in unfiltered water and one in Litmus water and compare the chlorine pads side by side. If the water doesn't change, send it back inside 90 days for a full refund.
Will it fix my hard water?
No, and anyone who says their showerhead softens water is overclaiming. Litmus does not remove dissolved calcium or magnesium. What it removes is free chlorine and chloramine, the disinfectants drying out your skin and hair.
Is it going to kill my water pressure?
No. The head is rated at 2.2 gallons per minute, the full-pressure US standard, and the filtration core sits upstream of the spray plate so the spray stays strong.
Am I going to get locked into a subscription?
Never. Cartridges last about 90 days of daily showers and swap in seconds. Buy them when you want them, or grab the Year bundle and forget about it.
How long until I notice something?
The strips show the chlorine difference the same day. Hair and skin are individual: most people describe the change in how their hair and skin feel over the first weeks. That is exactly why the guarantee runs 90 days, not 30.

Stop showering in pool water.

Install it in five minutes. Test it the same day. Ninety days to change your mind.

Get The Litmus Showerhead

Free US shipping · 25-strip kit in every box · no subscription

Packshot sobre textura de água (1.2)

Filter does not soften water or remove dissolved minerals (calcium and magnesium). Cosmetic benefits (softer-feeling hair and skin) reflect reduced chlorine exposure. Individual experiences vary.