---
title: "Trend — vitamin c shower filter - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/vitamin-c-shower-filter/trend"
last_updated: "2026-08-08T13:06:30.145Z"
locale: en
meta:
  description: "Niche score 55/100 · $396K/yr market · 149K searches/yr. A deep review moat (8,674 avg reviews) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 55/100 · $396K/yr market · 149K searches/yr. A deep review moat (8,674 avg reviews) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Trend — vitamin c shower filter - Flapen"
---

# **vitamin c shower filter**

**Worth a look**

Shows a sweet-spot price point ($34.20 avg), but a deep review moat (8,674 avg reviews) keeps it on the watch list.

Market size 55Growth 43Conversion 78Competition 44Returns 82Price range 93Avg price 95Brand share 25Review moat 22Quality gap 42

**Avg price**

**Incredible****$34.20**

avg listing price — sweet spot $15–$100

**Price range**

**Great****$13.71–$77.47**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Returns**

**Great****1.7%**

return rate — above 5% kills the launch gate

**Conversion**

**Great****7.8%**

search→purchase rate — share of searches ending in a sale

**Market size**

**Good****$396K**

$396K/yr · 149K searches

**Competition**

**Okay****59%**

top-5 click share — leaders hold, buyers still browse

**Growth**

**Okay****+14.7%**

90-day search growth — must beat 0% to launch

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Brand share**

**Okay****90%**

top-5 brand share — brands hold most of the demand

**Review moat**

**Bad****8,673.8**

avg incumbent reviews — the moat a new listing must climb

## Trend