Rainley starter kit with Bossa shower filter and spare MicronFlo cartridge
Rainley shower filter starter kit
Used Rainley MicronFlo transparent shower filter cartridges from Florida and Colorado municipal water and Texas and Michigan well water, showing pleat discoloration after 2.5 to 3.5 months
Rainley shower filter starter kit
Rainley shower filter starter kit
How MicronFlo works: a clear casing lets you see the 5-micron pleated sieve change color as it catches contaminants, while inner layers of calcium sulfite, KDF and activated carbon reduce chlorine, heavy metals and odors
Rainley shower filter starter kit
Rainley shower filter starter kit
Trusted by thousands of Rainley customers: a woman enjoying a shower under a Rainley filter installed on the shower arm, with real results from real showers
Rainley starter kit with Bossa shower filter and spare MicronFlo cartridge
Rainley shower filter starter kit
Used Rainley MicronFlo transparent shower filter cartridges from Florida and Colorado municipal water and Texas and Michigan well water, showing pleat discoloration after 2.5 to 3.5 months
Rainley shower filter starter kit
Rainley shower filter starter kit
How MicronFlo works: a clear casing lets you see the 5-micron pleated sieve change color as it catches contaminants, while inner layers of calcium sulfite, KDF and activated carbon reduce chlorine, heavy metals and odors
Rainley shower filter starter kit
Rainley shower filter starter kit
Trusted by thousands of Rainley customers: a woman enjoying a shower under a Rainley filter installed on the shower arm, with real results from real showers

Rainley Bossa Starter Kit with Spare MicronFlo Cartridge

$90.00 USD $105.00 USD - $15.00 USD

Start here. Learn your water first.

The Rainley Complete Starter Kit pairs your Bossa shower filter with a spare MicronFlo cartridge — giving you enough runway to actually understand your own water before deciding what's next.

Every home's water is different. Pipe age, plumbing material, and distance from the treatment plant all affect how quickly your cartridge reaches saturation — so your first cartridge change is also useful information. There's no fixed schedule, and no way to know the exact day. This kit means you're covered for that first swap, without committing to anything ongoing.

What's included:

  • 1 Rainley Bossa shower filter (with MicronFlo cartridge pre-installed)
  • 1 spare MicronFlo replacement cartridge

Your Bossa arrives ready to install and filtering from the very first use. When your first cartridge reaches saturation — water starting to smell like tap water, skin and hair feeling less soft, or a gradual drop in flow — your spare is already on hand. No extra order, no waiting, no pressure to decide anything yet.

🛁 Install takes under 2 minutes, no tools required.
🔁 Cartridge swap takes less than a minute — no tools, no fuss.

Once you know your own replacement rhythm, subscribing means we handle the timing for you. [Subscribe and save].

Rainley Bossa Starter Kit w...

$90.00 USD

MicronFlo Technology

The Science Behind MicronFlo

Rainley’s unique MicronFlo technology is designed to capture impurities at a micron level, delivering cleaner water for healthier skin and hair.

🌱 Activated Carbon Fiber

Absorbs impurities for fresher water.

🚿 Calcium Sulfite

Removes chlorine that dries out skin and hair.

🌟 KDF55

Neutralizes heavy metals.

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What MicronFlo Reduces

Chlorine & chloramine

Heavy metals & iron

Sediment & pipe scale

Rust and dirt particles

Without Filter
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With Rainley
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With Rainley, every shower becomes a true self-care ritual.

  • 5 stars: 62 (81%)
  • 4 stars: 7 (9%)
  • 3 stars: 0 (0%)
  • 2 stars: 5 (6%)
  • 1 star: 3 (4%)
T
Tatiana
Great replacement cartridge!

Great replacement cartridge! It was very easy to install and only took a couple of minutes. The water flow improved right away, and everything works perfectly with my Rainley Bossa shower filter. I’m very happy with the quality and would definitely buy it again.

D
Daniel Zhang
Found this after a hard water wake-up call

A few months back, I experienced a cracked braided supply line under my bathroom sink, coated in white chalky mineral buildup and then came the messy cleanup just drove me crazy. That residue is calcium and lime scale, left behind by hard water eating away at metal and rubber over time. Because I often had dry, itchy skin and damaged, brittle hair like never felt I could achieve a satisfactory rinse no matter how long I stayed under the shower. It took me far too long to recognize our poor-quality water.Almost a month in, out of curiosity, I unscrewed the mid body section of the housing to take a look at the cartridge. Being able to see the filtration happening (check out my photo) rather than just take it on faith made it feel real instead of a marketing claim.If you're even a little in doubt, try this filter out. I feel like it's already helping repair my skin and hair after the first week of using it. I have a feeling some users, like myself, may need to replace the cartridge more frequently than some arbitrary schedule, but the nice thing is I can literally tell just by looking at my used cartridge. I love that about this brand, I am not guessing.I don't know how to describe it, but the water coming out of the filter instantly feels different, in an excellent way. It feels silky. Now I don't step out of a 10-minute shower feeling like I've still got conditioner in my hair and soap scum on my skin.At this price point, it's a smart, affordable alternative to a whole house filtration system, you know, this felt like reasonable insurance.

s
shigh76
It Really Works Great!

These filters really work hard getting all of the impurities out of my water system. I am on well water so having hard water is a big issue in my household. I like how I can change the filter in a matter of seconds with no tools needed. I decided to do a video on how easy it is to change, and I wanted everyone to see how dirty my filter was. The video speaks for itself.

A
Alyssa F.
It works!

This was one of my best purchases hands down.

K
K. Sheltra
Wow! This filter is amazing.

We have seen a huge improvement of our skin and also there is very little hair loss in the shower drain now.

N
Noel S
Good Investment

The Rainley Bossa Inline Shower Filter is one of those rare bathroom upgrades that delivers visible, feel-it-in-your-skin results almost immediately—especially if you live in a hard water area like Florida, where chlorine, heavy metals, sediments, and minerals can leave your skin and hair feeling stripped and dry.We received ours on Saturday and my husband installed it the same day. He said it was incredibly easy—no tools needed, just a quick screw-on to our standard shower arm. It comes with everything required (including rubber washers for a secure, leak-proof fit), and the chrome finish looks sleek and modern without being bulky. He ran the water for about 15 minutes to flush it out, and there was no gunk or debris at all—clean from the start.Day 1 ImpressionsMy husband was the skeptic at first—he'd been pushing for a different brand—but after I showed him the glowing reviews, we went with the Rainley Bossa. He hopped in for what turned into nearly 30 minutes! When I asked what was taking so long, he said, "The water just feels really soft on my skin—I don't even want to get out." He emerged amazed at how incredibly soft his skin felt, like a baby's bottom, with no lotion or moisturizer applied. His face had a healthy glow instead of the usual dry, ashy look, and it didn't feel stripped at all.Normally, after showering with our hard Florida water, both our skin feels tight, dry, and stripped no matter what body wash or soap we use. Moisturizers just sit on top without absorbing properly, and we end up needing to exfoliate constantly. But this time? Total game-changer.Then it was my turn. I have eczema that I've been managing with almond oil and cocoa butter lotion right after showering for better absorption. I washed as usual with my regular soap and body wash, rinsed, and dried off—and I couldn't believe how unbelievably soft my skin was! My face was glowing in the mirror without any moisturizer yet. Even when I'd previously showered with just water, my face felt dry and tight. This time, when I applied my vitamin E oil to my face, it glided on smoothly and absorbed beautifully—no greasy residue or fighting to work it in. I put almond oil on my body, and every inch felt brand new, deeply nourished, and incredibly soft.Another surprising bonus: the fresh scent of my body wash lingered all the way into the next morning. It never used to last like that before.Performance HighlightsThe Rainley Bossa uses micron-level filtration, capturing impurities, microplastics, chlorine (up to high percentages), heavy metals, rust, sediments, limescale, and other contaminants that standard filters often miss. It tackles hard water issues head-on, reducing dryness, itchiness, irritation, and even helping with conditions like eczema or sensitive skin. The anti-clog side-inlet design maintains high, powerful water pressure-no noticeable drop-off, which is a huge win over other filters that get clogged or weaken flow over time.Longevity and MaintenanceThe transparent casing lets you monitor the filter easily. We've already planned for our first replacement because we have no intention of going back to unfiltered hard water.Final ThoughtsIf you're dealing with hard water woes—like chronically dry, stripped skin, dull hair, scalp irritation, eczema flare-ups, or just wanting softer, healthier-feeling showers—the Rainley Bossa Inline Shower Filter is a smart, worthwhile investment. It's affordable, installs in minutes, keeps strong pressure, and provides real, noticeable improvements in skin softness, glow, moisture absorption, and overall shower comfort. We did a month of research before buying and couldn't be happier—it's turned our daily showers into something truly restorative and nourishing. Highly recommended for anyone in a hard water area or looking to cut exposure to harsh chemicals and impurities! I'll update again after a few hair washes, but so far, we're thrilled.

L
Le petit gros
Genuine thoughts on Rainey micronflo

I have been testing Rainley for a good few months because of its innovation with its cartridge see-thru body where I can essentially see its performance. Lo and behold, I am actually scared of what’s going on in my tap water (see attached photo) as I can literally see the old cartridge’s pleats turned dark. On one hand, it’s satisfying realizing I discovered the most dependable shower filter on the market while on the other hand, I am wondering to whether I have to move for better tap water haha. I even uploaded this photo for Ai to give me more insights together with my Silicon Valley zip code and the answer blows my mind. Ai pointed out likely culprits like trapped sediments, rust/iron particles (super common from older pipes in Bay Area homes), chlorine buildup, hard water minerals (calcium/magnesium scale), and traces of stuff like chromium-6 or disinfection byproducts that show up in local water reports. Those dark, grimy pleats after a few months? That's visual proof of everything it's catching—gross to see, but reassuring that it's actually doing the job unlike the opaque filters I've tried before that left me guessing.Your shower water has so many varying elements like your house/apt building age hence piping age, source of your tap water (your zip code). My brother and I had been comparing notes lately about our shower filtration, he lives in West Texas and his rainley micronflo filter turned a deep reddish-brown orange color in little over a month where their water is heavily influenced by geology, oil and gas byproducts like PFAs and heavy metals), plus agricultural runoff. Now we are on the "subscribe and save" plan for some savings and peace of mind.I want to share our experience here and more importantly, please do your due diligence about your local water. Hope this helps.

B
BWaggoner
Effective Filtration with Noticeable Results – Replaced After 5 Months of Use

The filter replacement process was straightforward and took only a few minutes. Replacement frequency will vary based on your local water conditions, recommend every 3-5 months. In our case (moderate hardness and municipal supply), we replaced the cartridge after approximately 5 months of daily use. The visible discoloration on the used filter (see photo) clearly indicates buildup of sediments and potential contaminants.Since installing the Rainey shower filter system, we’ve noticed a significant improvement in both personal care and bathroom maintenance. Skin irritation and dryness have been greatly reduced, likely due to the removal of residual chlorine and other chemical irritants. Hair has become smoother, shinier, and less frizzy, a likely result of filtering out harsh minerals and waterborne compounds.Additionally, there has been noticeably less calcium and mineral buildup on our shower doors and tile, which makes cleaning easier and suggests the filter is effectively reducing hardness-related deposits.Highly recommend for households dealing with hard or chemically treated water. Regular cartridge replacement is essential to maintain optimal filtration performance. Your hair and skin will thank you and let you know how often to replace.

A
Addison Wu
Recommended by my hair salon, believe it or not

We've got horrible hard water here—it's like the pipes are plotting against you. My hair was falling out in clumps after every wash, scalp dry and irritated, and I'd spend hours detangling the straw-like strands. It got to me mentally; I avoided washing it some days just to save what was left. Saw this at my hair salon (yeap, my hair salon) and thought, why not? installation was 3 minutes tops, and holy cow - the difference in a week, Mind blown! Hair fall has plummeted, and it's actually soft and manageable—no more endless shedding in the drain. Skin feels balanced too, less tight. This made our bathroom a safe haven again and I signed up for the subscribe and save for the filter cartridge replacements.

D
Delmaris
Leak-Proof, Cleaner Water, Glowing Skin & Hair, Easy Setup!

I was not expecting to love the bossa shower filter by Rainley. I live in a place with super hard water that smells like a public pool half the time, and this filter has made such a difference. Right from the first shower, the water felt cleaner, like all that chlorine and gunk was gone. My bathroom tiles aren’t getting that gross soap scum buildup anymore, which is a huge win because I hate scrubbing them.My skin and hair are honestly thriving now. My skin used to feel so dry and tight after showers, but now it’s actually soft and doesn’t itch at all. My hair’s another story—it’s way shinier, less frizzy, and my color-treated highlights are holding on way longer than usual. No more of that crunchy, dull mess I was dealing with before.I was a bit worried it’d kill my water pressure, but nope, the flow’s still strong and feels great. Installing it was a total no-brainer—took like 30 seconds, no tools, and it hooked right up to my shower arm without any leaks. The build feels solid too, not some flimsy plastic thing that’s gonna break. I can see the filter doing its thing through the clear case, which is kinda cool and makes me trust it’s working. The price is higher, but my skin and hair deserve the best water, and this filter totally delivers. I’m already raving about it to everyone I know!

R
ROMANWAF
Filter is above the average shower head filter .

The Micronflo Replacement Filter features a clear, transparent body with multiple slots on the side, allowing water to flow through to the shower head. The size of the filter is standard and fits the vast majority of the filter housings. The installation is straightforward and should not take more than a few minutes. The filtered water is clean without any dirt or smell. There is no adverse effect on the water flow rate. I appreciate that the filter has three major components proven to remove metals, chlorine, and other harmful chemicals. There are many thousands of different shower filters available to choose from. There is competition among sellers who provide the most stages of filtration. The highest numbers reach several dozen layers of filtration. Out of curiosity, I disassembled some of them. I doubt that they provide any advantage. Still, if you look at the filters certified by independent testing agencies, most of them use the same ingredients that are present in this filter. I appreciate that the filter is transparent, allowing the level of contamination to be visible. I could not find on Amazon the transparent housing of the standard size that would be very helpful in determining the time of filter replacement. The Micronflo Filter is above the average shower head filter based on water quality and my experience.

C
Catherine
Great filter replacement

Great replacement that fits in other filters too, not just the same brand. I haven’t super hard water and this seems to work a little better than the standard filters to improve the water quality coming out of the shower head.

c
chris
Great filter!

Great replacement filter! It's well made and very easy to replace. It has great water pressure and makes your skin softer from removing all of the chemicals from the water.

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Tj
Fresh water, healthier skin!!

I’m really impressed with this shower filter! It’s easy to install, and the water feels so much cleaner and fresher. My skin and hair have been feeling softer, and I’ve noticed less irritation. The pressure is strong, and it doesn’t compromise on flow. It’s a simple but effective upgrade for better showering every day.

J
Jay
Perfect Fit and Easy Installation – Highly Recommend!

Excellent shower filter O-ring included! It fit perfectly with my shower head, even though it’s a different brand. Installation was a breeze, and the water quality was as good as with the previous filter that came with my shower head. Definitely an improvement with water quality when using these filters. Highly recommend!

c
cl
Rainley Bossa Inline Shower...

What I love most about this product is how easy it is to install. It also removes the typical smell from the water, so my showers feel so much more refreshing lately, and my skin feels softer. After moving to a new place, the smell of the water made showering unpleasant, but ever since I installed this filter, I’ve started to truly enjoy my showers again.

D
DelaniZavacky
Great product

Great product and I noticed a difference in my hair color lasting almost immediately

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Lisa Lenz
Good

Works well. No instructions on when to change or where to purchase replacement filters

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Chuck Prime
Better water, so many benefits!

I’ve tried a few shower filters before, but this one has honestly been my favorite.It was super easy to install. Everything I needed was already in the box, and I had it hooked up in just a few minutes without needing any tools. The instructions were clear, so the whole process was pretty straightforward.One of the things I like most is that the filter is clear, so you can actually see what it’s catching over time. Instead of just hoping it’s working, you can literally see the dirt and sediment it’s filtering out. That gives me a lot more confidence that it’s doing its job.After using it for about 10 days, I definitely noticed a difference. My skin doesn’t feel as dry after I shower, and my hair feels softer and isn’t nearly as frizzy. I also feel like my scalp is less irritated. I wasn’t expecting a huge change, but I was pleasantly surprised by how noticeable it was.Another thing I was happy about is that it didn’t reduce my water pressure. I’ve used filters before that made my shower feel weak, but this one still has great water flow.Overall, this just feels like a really well-made product. If you have hard water, sensitive skin, dry skin, or you’re just looking for cleaner shower water, I think it’s absolutely worth trying. It’s one of those small upgrades that makes a difference every day, and I’m really happy with my purchase.

A
Alyssa F.
IT WORKS!

I can’t believe how much gunk my filter caught within a couple months. I was shocked and disgusted when I removed my old filter. I will be reordering another replacement once this one is filled again.