Updated 26 October 2026
Dry skin, a change in hair texture or marks on the shower glass do not by themselves tell you which filter to buy. Use these six checks to narrow down the problem and choose a product for a defined purpose.
1. Check what is in your water
Start with your water supplier's information. If you have a specific concern, ask about suitable testing. The CDC cautions that taste, smell and appearance are not reliable indicators of water safety. A chlorine smell is therefore a reason to investigate, not proof that the supply is unsafe.
2. Separate chlorine reduction from water softening
Water hardness refers mainly to dissolved calcium and magnesium. A claim about reducing chlorine does not establish that a product removes those minerals. If scale is your main concern, ask specifically for hardness-reduction evidence instead of assuming that any shower filter is a softener.
3. Look for evidence for the exact model
Ask what substance was tested, under what flow and temperature conditions, and for how long. NSF/ANSI 177 concerns shower filtration and free-available-chlorine reduction. A reference to a standard is different from certification of a particular product. Verify any certification claim against the named model.
4. Check the bathroom connection
A handheld shower head connects to a hose; a fixed wall outlet is a different starting point. Inspect your existing fittings and the space around them before ordering. Our installation guide shows the Nude Aqua setup. If the connection is unclear, send a photo through Contact Support before buying.
5. Work out the refill plan
A filter purchase includes ongoing maintenance. Identify which cartridges the product uses, check pack quantities and replacement guidance, and compare refill costs. Nude Aqua's replacement guide distinguishes the Vitamin C Shot, PRM cartridge, activated carbon filter, microfiber pad and ceramic ball filter.
6. Keep skin and hair concerns in context
Do not use a filter as a diagnosis for a rash, eye irritation or hair loss. If a symptom is persistent or concerning, get appropriate medical advice. Choose the filter for a supported water-treatment claim, with realistic expectations about the bathing experience.
Your buying checklist
- A clear reason for filtering the water.
- Evidence for the reduction claim you care about.
- A confirmed connection and suitable installation space.
- Available refills and a maintenance plan.
Ready to compare the parts? Browse the Filtered Shower Head Bundle and filter refills, or read how Vitamin C neutralises chlorine.
