The Core of Chlorine Removal in Modern Showers
A Quiet “Skin-Beauty–Grade” Water Purification Revolution in Western Bathrooms
In bathrooms across Europe and North America, a quiet “skin-beauty–grade” water purification revolution is underway. At the heart of this transformation is calcium sulfite dechlorination media developed by ETERNAL WORLD New Materials Co., Ltd., based in Shandong, China.
This white, spherical filter media has become a key component in the supply chains of multiple shower filter brands on Amazon, helping these products achieve monthly sales exceeding USD 300,000.
Market Shift: From Basic Cleansing to Skin-Care–Driven Demand
Consumer expectations for shower water quality have undergone a fundamental shift. Scientific studies indicate that residual chlorine damages the skin barrier, accelerates moisture loss, and contributes to sensitive-skin conditions. During an average 10-minute shower, the human body may absorb chlorine equivalent to that found in eight glasses of chlorinated water.
Consumers in Europe and North America are increasingly aware that chlorine in shower water can cause dry skin, frizzy hair, and even more serious dermatological issues. This growing health awareness has directly driven demand for high-performance dechlorination media, pushing the Amazon shower filter category to monthly sales of over USD 300,000, with product ratings consistently above 4.4 stars.
Technological Breakthrough: Superior Performance of Calcium Sulfite
The core advantage of ETERNAL WORLD’s calcium sulfite dechlorination media lies in its unique reaction mechanism. Unlike traditional activated carbon, which relies on physical adsorption, calcium sulfite removes chlorine through a chemical reaction, converting free chlorine into harmless calcium sulfate and calcium chloride.
This reaction occurs almost instantaneously—achieving up to 99% chlorine removal in just 0.1 seconds, far outperforming conventional materials such as activated carbon. Equally important, calcium sulfite offers a long service life, ensuring stable and consistent performance over time.
Building upon traditional calcium sulfite technology, ETERNAL WORLD has developed its proprietary LSR (Long-lasting Smart Release) technology, combined with a gradient temperature-controlled nano-microporous sintering process. This innovation effectively solves the common issue of pulverization found in conventional dechlorination media. As a result, product lifespan is extended to 6–12 months, with heat resistance exceeding 80°C.
International Certifications: A Global Passport for Quality
ETERNAL WORLD’s dechlorination media has successfully passed NSF-177 performance testing and obtained NSF-42 safety certification, both widely regarded as essential “technical passports” for entering the European and North American water treatment markets.
NSF-177 focuses specifically on performance and safety standards for free chlorine reduction, requiring materials to maintain stable dechlorination efficiency even under extreme water conditions.
NSF-42 addresses aesthetic water quality improvements and material safety.
As a member of the Water Quality Association (WQA), ETERNAL WORLD actively participates in industry standard development. Its technical capabilities have been recognized by over 1,000 customers worldwide.
Customization Capability: Meeting Diverse Market Needs
ETERNAL WORLD offers a full size range from 0.5 mm to 10 mm, a key factor in winning the trust of overseas brands. For compact designs such as handheld shower filter cartridges, the application of 0.5 mm ultra-fine particles overcomes the challenge of sintering stability at extremely small sizes, ensuring structural integrity even under high flow rates.
The company supports OEM/ODM customization and can integrate PP cotton layers to create multi-stage filtration systems, meeting the personalized requirements of different brands. To address varying regional water conditions, ETERNAL WORLD has also developed multiple composite filter formulations:
High-chlorine regions in Europe and North America: Calcium sulfite and KDF content increased to over 50%
Southeast Asian markets: Formulations focused on scale control and microbial issues
Commercial high-flow applications: Larger particle combinations to reduce flow resistance
User Testimonials: Real Feedback from Amazon
Customer reviews on Amazon provide strong validation of product performance:
“Perfect water pressure and easy installation,”
“The water feels much softer,”
“I noticed a difference in my hair and skin even after the first use.”
Consumers particularly value the ease of installation:
“No tools required—installed in just a few minutes,” an important advantage in Western markets.
Long-term customer feedback such as “No issues after six months of use” further confirms the durability and reliability of the filter media. As expectations for shower experiences continue to rise, shower products with built-in dechlorination media have shifted from a niche option to a mainstream standard.
Future Outlook: From Shower Filtration to Whole-House Water Solutions
Health-focused skin care has become a central selling point in the modern bathroom economy. Looking ahead, as demand for healthier household water continues to grow, calcium sulfite–based dechlorination technology is expected to expand into a wider range of residential water applications—from showers to whole-house water purification systems—unlocking even greater market potential.
