Duo Filter+
3,576+ ReviewsThe filtered shower for calmer skin and stronger hair.
Duo Filter+
Duo Filter+
3,576+ ReviewsThe filtered shower for calmer skin and stronger hair.
Clinicians’ Choice
419 clinicians share this on FrontrowMD without compensation.
Two-stage filtration removes the chlorine, PFAS and sediment your skin and hair meet every shower.
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How does the subscription work?
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Today
Your starter kit
Your Duo Filter+ and first cartridge ship within 24 hours and arrive in 6–8 business days — tracking included.
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Every 30 days
Your refill
A fresh cartridge is delivered to your door automatically, so filtration never drifts past peak performance. No reminders, no guessing, no rundown — and you’re only charged when each cartridge ships.
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Flexible
Your subscription
Pause, skip a delivery, change your address or cancel — anytime, in one click, from the link in your confirmation email. No lock-in, no fees.
Test & Results
Every claim on this page is backed by an independent lab, not a marketing team.
- 99% of chlorine removed — certified to NSF/ANSI 177
- 99% of PFAS (“forever chemicals”) removed — certified to NSF/ANSI 53
- 99% of particulates (rust, sediment, pipe debris) removed — certified to NSF/ANSI 42
- Built with low-lead materials certified to NSF/ANSI/CAN 372
See the full third-party test reports — batch data for chlorine, PFAS and particulates →
Technology
Two stages, doing two different jobs.
- Stage 1 — Sediment filter. A dense mesh layer catches rust, sand and pipe debris before it reaches your skin or hair.
- Stage 2 — Activated carbon. Chlorine and PFAS molecules bind to the carbon and stay there, not on you.
No batteries, no app, no maintenance beyond swapping the cartridge. Screws onto your existing shower arm in under 2 minutes.
Product Specs
- Filtration: two-stage — sediment + activated carbon
- Flow rate: 2.8 GPM
- Cartridge replacement: every 30 days for lab-verified peak filtration
- Fitting: universal ½″ thread — fits any standard shower arm
- Dimensions: 22 × 6.2 × 9.5 cm · Weight: 340 g
- Finishes: Arctic White, Midnight Black, Petal Pink
Issues We Address
For your skin: tightness and dryness after showering, redness and irritation, breakouts linked to mineral and chemical buildup, a compromised skin barrier.
For your hair & scalp: frizz and brittleness, a dry and flaky scalp, faster colour fade, excess shedding and breakage.
Chlorine and dissolved metals are common, well-documented irritants for skin and hair. Removing them is the first step — not a miracle cure.
- NSF/ANSI Certified
- Independently Lab-Tested
- Universal Fit — No Plumber
- 30-Day Money-Back Guarantee
- Ships Within 24 Hours
Chlorine
Tested by an independent laboratory:
NSF/ANSI 177
Chlorine disinfects tap water, but it also strips the natural oils from skin and hair — leaving both dry, tight and prone to breakage.
PFAS
Tested by an independent laboratory:
NSF/ANSI 53
PFAS (“forever chemicals”) don’t break down naturally and have been linked to hormone, immune and reproductive problems.
Particulates
Tested by an independent laboratory:
NSF/ANSI 42
Rust, sediment and pipe debris travel through ageing infrastructure before they ever reach your shower — and your skin.
Materials
Certified by an independent laboratory:
NSF/ANSI/CAN 372
Every material in contact with your water is certified low-lead, so the filter itself never becomes part of the problem.
Designed around two things: your skin and your hair.
Calmer, more comfortable skin
Chlorine strips your skin’s natural barrier, leaving it dry, tight and reactive. The Duo filters it out before it reaches you — relief that lasts well after the water’s off.
Stronger, healthier-looking hair
Chlorine and dissolved metals rough up the hair cuticle and fade colour fast. Removing them helps hair hold on to moisture, softness and colour.
Fits the shower you already have
No new showerhead, no plumber. The Duo installs between your arm and your existing head in under two minutes.
See it in action
Real routines — tag @norde to be featured here.
Install in under two minutes.
See the full guide
Unscrew your current showerhead and wrap the included plumber's tape around the base of the Duo.
Hand-tighten the Duo onto your shower arm. No tools, no plumber, no drilling.
Screw your showerhead back on top, run the water for three minutes to flush the filter, and enjoy.
What people notice after their first shower.
It’s Working Well
Before I started using this filter I would step out of the shower with super dry skin, frizzy hair, and redness all over my skin. This filter greatly reduced the dryness of my skin, completely fixed the redness, and minimized the frizz. 10/10 recommend. Also my hair gets way less greasy now, and no more itchy scalp.
Very Good
I was really happy that they think about the customer. They even included the plumber’s tape.
No Dry Skin
I recently had to move out of a house where the entire house was filtered, and I decided to go with a filtered showerhead instead. I even take it with me when I travel and quickly install it in hotels. Keeps my skin healthier and less dry from all the chemicals. It’s also much nicer brushing your teeth compared to hotel water.
Felt It Immediately
Received it and felt the difference from the very first shower.
Simple Install, Works Well
Easy to install. Shower no longer smells of light chemicals. Barely noticeable reduction in water pressure. Swapping the cartridge each month takes about ten seconds.
Great Bundle Deal
Nice bundle that gives a small discount on some replacement filters as well.
Softer Skin, Less Dry Hair
Has made my hair less dry and skin so much softer! Have already recommended it to friends!
Loving It So Far
Beautifully boxed, very easy installation and not much flow reduction — my shower head functions the same as before the filter! Only a couple of showers in but loving it so far!
Does What It Says
Does what it says.
It’s Working Well
Before I started using this filter I would step out of the shower with super dry skin, frizzy hair, and redness all over my skin. This filter greatly reduced the dryness of my skin, completely fixed the redness, and minimized the frizz. 10/10 recommend. Also my hair gets way less greasy now, and no more itchy scalp.
Very Good
I was really happy that they think about the customer. They even included the plumber’s tape.
No Dry Skin
I recently had to move out of a house where the entire house was filtered, and I decided to go with a filtered showerhead instead. I even take it with me when I travel and quickly install it in hotels. Keeps my skin healthier and less dry from all the chemicals. It’s also much nicer brushing your teeth compared to hotel water.
Felt It Immediately
Received it and felt the difference from the very first shower.
Simple Install, Works Well
Easy to install. Shower no longer smells of light chemicals. Barely noticeable reduction in water pressure. Swapping the cartridge each month takes about ten seconds.
Great Bundle Deal
Nice bundle that gives a small discount on some replacement filters as well.
Softer Skin, Less Dry Hair
Has made my hair less dry and skin so much softer! Have already recommended it to friends!
Loving It So Far
Beautifully boxed, very easy installation and not much flow reduction — my shower head functions the same as before the filter! Only a couple of showers in but loving it so far!
Does What It Says
Does what it says.