Third-Party Tested. Proven Results.
Independent lab testing under the NSF/ANSI 177 standard confirms Gillian’s superior chlorine reduction over leading brands.
chlorine reduction at filter's mid-life
chlorine reduction at filter's end-of-life
more effective than leading brands
Gillian — The METAL Filtered Shower Head
Gillian filters chlorine and heavy metals for cleaner water and healthier skin and hair. Third-party tested to outperform leading shower filters — all built into a solid metal shower head.
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Third-Party Tested. Proven Results.
Independent lab testing under the NSF/ANSI 177 standard confirms Gillian’s superior chlorine reduction over leading brands.
chlorine reduction at filter's mid-life
chlorine reduction at filter's end-of-life
more effective than leading brands
About Gillian
Metal on the outside. Beauty on the inside.
Gillian™ by HammerHead® was created to make every shower feel better — not just cleaner, but elevated. From the first touch, its solid metal weight and balanced flow remind you what real quality feels like. Inside, advanced filtration transforms ordinary water into something that’s gentler on your skin, kinder to your hair, and better for your everyday routine.
Skin & Hair
Most household water contains chlorine, heavy metals, and other contaminants that come into direct contact with your skin and hair every day.
Over time, these can contribute to common issues like:
- Dry, irritated skin
- Dull or brittle hair
- Increased sensitivity and discomfort
Gillian™ by HammerHead® reduces chlorine and heavy metals at the source, improving the quality of the water you shower in.
The result:
- Healthier skin that feels softer and less irritated
- Stronger, smoother hair with improved feel and appearance
- Cleaner water that feels gentler every day
Filtration That Lasts
We built Gillian’s filtration around better media — and more of it. Using genuine KDF55® from Kymera (the only true KDF), paired with calcium sulfite, Gillian delivers longer-lasting, third-party tested filtration.
What sets it apart:
- Genuine KDF55® sourced directly from Kymera — not imitation media
- The most filtration media in its class (360g KDF55® + 55g calcium sulfite)
- Third-party tested under NSF/ANSI 177 for verified chlorine reduction
- Maintains performance over time, not just out of the box
What's Included
Installation & Specs
| Installation Guide | View Installation Guide |
| Model # | 6-GILLIAN-XX-XX |
| Replacement Filter Model | HOC |
| Housing Material | Lead-Free Brass & 304 Stainless Steel |
| Thread Type | 1/2" NPT |
| Cartridge Material | ABS |
| Filtration Material | Genuine KDF55® and Calcium Sulfite |
| Contaminants Removed | Chlorine, Heavy Metals |
Product Videos
Warranty & Returns
Built to Last
Every product is made from premium metals like stainless steel and brass. No gimmicks. Just solid metal plumbing fixtures that hold up, use after use, year after year.
Hassle-Free Returns
Not feeling it? No worries. You've got 90 days from delivery to send it back. We accept returns for any reason — just return the product in good condition with all parts, instructions, and original packaging.
View Full Return Policy
Lifetime Warranty
We stand behind our products — for life. This HammerHead Showers® product comes with a limited lifetime warranty for the original homeowner. If it leaks, drips, or fails under normal use, we’ll send you replacements or repair parts — free of charge.
View Full Warranty Details
Customer-Proven Results
Based on a survey of over 100 filter customers, July 2025.
Not All Shower Heads Are Built The Same
Looks Good. Performs Better. Outlasts Them All.
10,000 gallons
Filtration That Actually Performs
Gillian uses genuine KDF-55® and calcium sulfite — proven filtration materials chosen for reducing chlorine and heavy metals in shower water. Third-party tested under NSF/ANSI 177, this focused approach outperforms multi-stage filters that rely on ineffective filler.
By reducing chlorine and other contaminants, water feels gentler on skin and hair — helping limit dryness, improve rinsing, and leave hair feeling smoother after every shower.
Each filter is designed to last up to 10,000 gallons or about 3 months of regular use (whichever comes first), delivering consistent filtration without frequent replacements.
Chlorine
A blend of KDF-55® and calcium sulfite reduces chlorine in shower water, helping limit dryness and irritation.
Heavy Metals
KDF-55® helps reduce heavy metals like lead and mercury that can affect skin and hair over time.
Bacterial Growth
KDF-55® naturally helps discourage bacteria and buildup inside the filter.
Built Like a Real Fixture
Whether your bathroom is brand new or well-lived-in, Gillian delivers solid metal construction and real filtration in a form that looks like it truly belongs alongside your existing fixtures.
Install It Yourself In Minutes
From box to bathroom in 4 easy steps. No special fittings, adaptors, or extra hardware needed.
Remove old shower head
Clean the shower arm threads for a tight seal.
Wrap shower arm threads with included tape
Three wraps, always clockwise.
Hand-tighten Gillian™ onto shower arm
Use included wrench for final turn.
Run warm water for one minute
This ensure a fresh, clean start. Installation complete!
