Second Shower is the better choice. It uses a Vitamin C shower filter that neutralizes chlorine and chloramine, with an NSF/ANSI 42 certified sediment pre-filter and independently lab-tested 99.9% free-chlorine reduction through its peak window. Eskiin relies on KDF-55 media that starts strong but degrades rapidly—most users report performance drops within 2–3 weeks.
- Day 60 performance: Second Shower maintains 99.9% free-chlorine removal; Eskiin drops below 10%
- Chloramine removal: Vitamin C neutralizes both chlorine AND chloramine; KDF struggles with chloramine (<50%)
- Zero pressure loss: Second Shower's 128 micro-jets maintain flow; Eskiin reduces pressure by 20–40%
- Annual filter cost: Second Shower $54–108 vs Eskiin ~$120–180 (more frequent replacements)
- Independent testing: Second Shower's full assembly tested by official lab; Eskiin claims unverified
Head-to-Head: Eskiin vs Second Shower
Eskiin markets itself as a premium filtered showerhead with "multi-stage filtration." But when you compare the actual filtration specs, replacement costs, and long-term performance, Second Shower delivers better chlorine removal, maintains consistent performance, and costs less over time.
| Attribute | Second Shower | Eskiin |
|---|---|---|
| Filter Media | Vitamin C gel matrix (proprietary) | KDF-55 + Activated Carbon |
| Chlorine Day 1 | 99.9%¹ | ~90% |
| Chlorine Day 60 | 99.9%¹ | <10% (estimated) |
| Chloramine Removal | Neutralizes chloramine | Poor (<50%) |
| NSF Certified | NSF/ANSI 42 (sediment pre-filter) | No |
| Price | $69 (Hand) / $79 (Head) | $89–129 |
| Filter Replacement | $27/3-pack every 3–6mo | ~$30 every 2–3 months |
| Annual Filter Cost | $54–108 | ~$120–180 |
| Pressure Impact | Zero loss (micro-jets) | 20–40% reduction |
| Flow Rate (GPM) | 2.5 default / 1.8 swappable | n/a |
| Micro-Jets | 128 (Hand) / 176 (Head) | None |
| Vitamin Infusion | 5 vitamins (C, E, B3, B5, B7) | None |
| Independent Testing | Independent official lab (full assembly) | Unverified |
¹ Free chlorine only. Independently lab-tested through the cartridge's peak window.
The Eskiin Problem: KDF Degrades Fast
Eskiin uses KDF-55, a copper-zinc media that works through redox (reduction-oxidation) reactions. It starts strong—around 90% chlorine removal on Day 1—but the performance drops sharply as the media oxidizes.
By Day 60, most KDF filters drop below 10% effectiveness. That means you're replacing filters every 2–3 months instead of the advertised 4–6 months, which drives up your annual cost.
Chloramine is the bigger issue: Many US cities (Phoenix, Las Vegas, Portland, parts of LA) use chloramine instead of chlorine. KDF-55 removes less than 50% of chloramine, even when fresh. If your city uses chloramine, Eskiin won't protect your skin or hair.
How Second Shower Solves Both Problems
Second Shower uses a Vitamin C shower filter that neutralizes chlorine and chloramine, with an NSF/ANSI 42 certified sediment pre-filter and independently lab-tested 99.9% free-chlorine reduction through its peak window. The Vitamin C gel matrix doesn't degrade the way KDF does—it maintains consistent performance through the cartridge's rated lifespan.
- Vitamin C neutralizes chloramine: Unlike KDF, ascorbic acid chemically neutralizes both chlorine (HOCl) and chloramine (NH₂Cl) on contact
- No pressure loss: 128 micro-jets (Showerhand) or 176 micro-jets (Showerhead) maintain full flow while filtering
- Lower annual cost: Replace every 3–6 months ($54–108/year) vs Eskiin's 2–3 months (~$120–180/year)
- Independent lab testing: Full assembly tested by an accredited third-party lab; Eskiin's claims are unverified
Learn more about the science: Vitamin C Shower Filter: The Chlorine Science
Get Consistent Filtration That Lasts
Second Shower's Vitamin C filter maintains 99.9% free-chlorine removal through its peak window—no degradation, no chloramine left behind.
Shop Second Shower ShowerheadWhere Eskiin Genuinely Wins
Eskiin does have a few advantages:
- Aesthetic design: Eskiin's brushed metal finishes (chrome, brushed nickel, matte black) may appeal to buyers prioritizing bathroom decor
- Retail availability: Eskiin is stocked in some home-goods retailers, offering immediate in-store purchase
- Lower upfront price (occasionally): During sales, Eskiin's handheld may drop below $70
But none of these outweigh the core filtration issue: if the filter doesn't remove chlorine and chloramine consistently, the aesthetic doesn't matter.
What About Hard Water?
Neither Eskiin nor Second Shower removes hardness minerals (calcium, magnesium)—and that's intentional. The clinical evidence shows hardness minerals aren't harmful:
- The SWET trial (336 children, 12 weeks, ion-exchange softening) found no improvement in eczema severity (p=0.53) when hard water was softened
- Hard water is associated with higher AD risk in infants (Perkin et al. 2016), but the association is independent of chlorine content
- Chlorine—not hardness—is the oxidative stressor that disrupts the skin barrier
If you're concerned about "hard water," you're likely seeing the combined effects of chlorine + mineral deposits. A TDS meter will show high numbers (minerals), but those minerals aren't the problem. Focus on chlorine removal first.
Read the full breakdown: Best Shower Filters for Hard Water (2026)
Frequently Asked Questions
Is there a shower filter under $50 that actually works?
Most filters under $50 use KDF-55 or basic carbon, which degrade quickly—often below 10% effectiveness by Day 60. If you're on a strict budget, look for a unit with Vitamin C media (some handheld models start around $40–60) and verify independent testing claims. Otherwise, you'll spend more on frequent replacements than you save upfront.
Second Shower's Showerhand starts at $69 with a $27/3-pack filter subscription, which works out to $9 per cartridge—competitive with budget options but with verified 99.9% free-chlorine removal through the cartridge's peak window.
Does Eskiin remove chloramine?
No. Eskiin's KDF-55 media removes less than 50% of chloramine, even when fresh. If your city uses chloramine (common in Phoenix, Las Vegas, Portland, parts of LA), you need a Vitamin C filter like Second Shower.
How often do I replace the Eskiin filter vs Second Shower?
Eskiin recommends replacement every 4–6 months, but most users report performance drops within 2–3 months due to KDF degradation. Second Shower's Vitamin C cartridge lasts 3–6 months with consistent performance (no degradation curve).
Does Second Shower reduce water pressure?
No. Second Shower's micro-jet nozzles (128 in the Showerhand, 176 in the Showerhead) maintain full flow while filtering. Eskiin users commonly report 20–40% pressure loss.
Is Eskiin NSF certified?
No. Second Shower's sediment pre-filter is NSF/ANSI 42 certified, and the full assembly is independently lab-tested for 99.9% free-chlorine reduction through its peak window.
Bottom Line
Eskiin is a decent-looking showerhead, but the KDF-55 filtration degrades too quickly, struggles with chloramine, and costs more over time due to frequent replacements.
Second Shower delivers:
- Consistent 99.9% free-chlorine removal through the cartridge's peak window (independently lab-tested)
- Chloramine neutralization (Vitamin C gel matrix)
- Zero pressure loss (micro-jet design)
- Lower annual filter cost ($54–108 vs ~$120–180)
- NSF/ANSI 42 certified sediment pre-filter
If you want filtration that works from Day 1 to Day 60—and protects against both chlorine and chloramine—Second Shower is the clear choice.
Switch to Better Filtration
Join thousands who've upgraded to Second Shower for consistent, independently tested chlorine and chloramine removal.
Shop Second Shower
Leave a comment
All comments are moderated before being published.
This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.