The science
How the OPINE shower filter works
If your skin feels tight after a shower or your hair is thinning, you’re not alone.
Most US water systems are filled with chlorine, heavy metals and other substances that shouldn’t be on your skin. That’s why we created OPINE. Our filtration system uses simple, proven science to turn harsh tap water into water that leaves your skin feeling softer, your hair looking shinier and your respiratory health.
The dirty secret in your daily shower
By the time tap water reaches your shower, it has traveled through miles of aging metal pipes and been treated with high levels of chlorine to kill bacteria, which is the same chemical used in swimming pools.
Chlorine
It kills bacteria but also strips your skin’s natural oils, causing dryness, tightness and flare-ups, especially if you have eczema or sensitive skin. Over time, chlorine buildup weakens your hair strands and fades your hair color, while your skin barrier becomes thinner and more reactive.
Heavy metals
Heavy metals such as lead, mercury, and iron leach in from corroded pipes, dulling hair color and irritating your scalp.
How unfiltered water sabotages your skincare routine
Chlorine and heavy metals disrupt your skin’s natural balance. They strip the oils that keep skin soft, and they make hair brittle, dull and dry. Most people waste their efforts trying to fix these problems with topical products, such as shampoo, serums and skin lotions, but the issue starts before you lather on any product.
Your skin doesn’t need another lotion, it needs water that doesn’t strip its natural oils. When you remove chlorine and heavy metals at the source, your skin can actually have the chance to heal and restore its balance.
How OPINE purifies your water
Our multi-stage filtration system uses science-backed methods and materials to reduce chlorine, heavy metals, sediments and impurities that damage your skin and hair.
Step 1
Microfiber Layers for Fine Filtration
As water first enters the filter, triple microfiber cloth layers trap sediments and particles down to 50 microns without slowing pressure. This ensures cleaner water right from the start and prevents clogging in later stages.
Step 2
KDF-55 Redox Reaction
Our NSF-certified KDF-55 layer follows next. As water passes through copper and zinc granules, a redox reaction neutralizes chlorine and locks up heavy metals like lead and iron. Our KDF media is granular-sized (about 0.5 mm), which increases the surface area for contact and makes filtration more effective. It also prevents bacteria and algae from growing, keeping your water clean and your filter fresh.
Step 3
Calcium Sulfite (Works Even in Hot Showers)
Finally, calcium sulfite removes leftover chlorine, chromium and metals that slip past cheap filters. It remains highly effective in hot showers, so you can enjoy your purifying shower ritual at your desired temperature.
Filtered water that’s powered by research
Research-backed evidence on shower water quality and skin health
Atopic Dermatitis and Chlorine Exposure (2016)
A large-scale study published in
The Journal of Allergy and Clinical Immunology
found that higher domestic water chlorine levels were linked to increased atopic dermatitis risk in early life.
Read study
Chlorine and Skin Barrier Function (2023)
Research in Processes Journal (MDPI) examined long-term exposure to chlorine-treated water and its effects on the skin barrier and irritation potential.
Read study
KDF-55 Effectiveness Review (2021)
A comprehensive review in
npj Clean Water (Nature)
confirmed that KDF-55 copper-zinc media removes over 90% of free chlorine through redox reactions, improving water quality.
Read study
NSF Certification Standards
NSF/ANSI 42 certification defines material safety and chlorine-reduction standards for consumer protection in shower filters.
Read Standard
Your daily shower should restore your health, not harm it
Ditch the contaminants that are keeping you from feeling and looking your best.
Purify my water
