Refresh your Duo-20 filtration.
Choose the $39 Subscribe & Save variant or the $49 one-time purchase. Contact hello@unchemed.com to manage future shipments.
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Mineral bead refillfor the handheld
15-Stage cartridgefor the inline filter
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Duo-20 Filter Replacement
One replacement set includes the mineral bead refill for the handheld chamber and one 15-stage cartridge for the inline filter.
$39$49
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Duo-20 replacement set · Free shipping included.
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Free Duo-20 Spa Ritual Guide$19.99 value
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Guide included with every order
Need the whole system? Get the Duo-20 Complete Kit at $89 →
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Try it risk-free for 90 days. Love it or get every penny back.
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Replacement
set
set
Made for
Duo-20
Duo-20
softer skin·stronger hair·less dryness·calmer scalp·more pressure·color that lasts·no filmy buildup·softer skin·stronger hair·less dryness·calmer scalp·more pressure·color that lasts·no filmy buildup
Inside the replacement set
Two filters. One complete refresh.
Refresh the mineral bead media in the handheld chamber and the 15-stage cartridge inside the inline filter. Duo-20 hardware is not included.
How it works
What else it catches.
The two replacement elements renew all twenty filtration stages in your existing Duo-20 system.
0filtration stages
0water pressure
0chlorine removed
0money-back
← drag · x-ray →
Maifan stone & ceramicKDF-55 heavy metalsAlkaline tourmaline
Vitamin C, A & ECalcium sulfiteCatalytic carbon
The science
Why your water matters more after 45.
Two forces working against your hair and skin, one from inside, one from outside. Only one is in your control.
Hormonal shift · less protection
30–50%
Less sebum after menopause
Estrogen decline reduces the oil your skin and scalp produce. The natural barrier that used to shrug off harsh water simply is not there anymore.
+
Unfiltered water · what is left gets stripped
85%
Of US homes have hard water
Chlorine strips what little oil your body still produces, and hard-water minerals coat every follicle in a film that no conditioner can rinse out.
You cannot stop hormonal changes. You can stop your water from making them worse.
Duo-20 system compatibility
Fresh media. Same Duo-20 setup.
These replacement elements are made for an existing Duo-20 system. Water pressure depends on household plumbing and installation.
Your existing Duo-20
Keep the hardware. Refresh the filters.
This replacement set does not include a showerhead, hose, bracket, adapter, or inline housing. The videos show the full system installation for compatibility context.
1
Keep your installed head
The replacement set is designed for the Duo-20 hardware already installed in your shower.
2
Keep the installed housing
The new 15-stage cartridge goes inside your existing inline filter housing.
3
Refresh both filter elements
Replace the mineral beads and 15-stage cartridge together on the recommended schedule.
Your Duo-20 spray modes
Fresh filtration. Same three settings.
The replacement media renews filtration in your existing Duo-20 without changing its spray controls.
Pressure that does not fade.
The replacement set refreshes the two filter elements. Your existing Duo-20 showerhead retains its original spray and pressure design.
Rainfall
Gentle, wide coverage
Soft, even stream that rinses through thinning hair without pulling. Reduces mechanical stress on fragile strands.
✦ Best for: daily washing, color-treated hair
Jetting
Scalp stimulation
High-pressure targeted stream that lifts product buildup and hard-water residue from the roots.
✦ Best for: scalp health, tension relief
Mixed
Deep rinse power
Both patterns at once for a full rinse. Dermatologists recommend scalp massage for follicle health.
✦ Best for: product removal, root cleansing
What's in the box
What arrives in your replacement set.
Mineral bead refillfor the handheld15-Stage cartridgefor the inline filterReplacement maintenance
Both filter elements. One replacement set.
Refresh the mineral bead media and 15-stage cartridge together for your existing Duo-20 system.
| Duo-20 replacement set | Generic single-filter refills | |
|---|---|---|
| Replaces bead media and inline cartridge | ✔ | Varies |
| Designed for Duo-20 | ✔ | No |
| Maintains the twenty-stage configuration | ✔ | Varies |
| Replacement cadence | About 6 months | Varies |
| Plumbing changes required | No | Varies |
| Includes new shower hardware | No | Varies |
In the wild
Real people. Real showers.
See Duo-20 system-use footage, pressure demonstrations, and the replacement process from the supplied media.
in use
first shower
full pressure
spray up close
pressure test
wash day
30-second refill
5-minute install
Questions
Good to know.
What is included in the replacement set?+
One mineral-bead refill for the handheld chamber and one 15-stage cartridge for the inline filter. Shower hardware and inline housing are not included.
Does it fit every shower?+
This replacement set is made for an existing Duo-20 system. It is not a standalone universal shower kit.
Will replacement media lower my water pressure?+
The replacement elements refresh the filtration media in your existing Duo-20. Water pressure depends on household plumbing, installation, and local conditions.
How often do I replace the filters?+
Replace both filter elements about every six months under normal use. Timing can vary with water quality and shower frequency.
How do I manage the Subscribe & Save option?+
Contact hello@unchemed.com to manage or cancel future replacement shipments. This page validates the initial replacement variant and price.
What is the return policy?+
The replacement set is covered by a ninety-day money-back guarantee. Contact hello@unchemed.com for assistance.
✓ Free shipping✓ 90-day guarantee✓ Made for Duo-20