COSLUS ADA Accepted C20 Water Dental Flosser Teeth Pick, 300ML Larger Tank | Portable Rechargeable Oral Irrigator for Orthodontic & Sensitive Gums, Cordless for Travel, Family, Professional Set, Grey
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Availability:
Only 1 left in stock, order soon!
Arrives
Tuesday, Aug 11
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Color: Sky Grey
Set name: Professional Set
Features
- ADA Scientific Council Accepted: Healthier gums in 15 days. Instantly removes food debris and dental plaque between teeth, helps prevent and reduce gingivitis and bleeding gums, and delivers visible improvement in two weeks.
- Water Flossing Cleans Effectively for a Healthier Mouth: COSLUS C20 water flosser boasts advanced, safe, and effective 0.3mm+0.3mm ultra-fine dual-thread water pulse technology, developed and continually optimized by our research team over years of research and real user testing. This water dental pick delivers 1400-1800 high-pressure pulses per minute to target and dislodge plaque for a thorough clean. This water flosser also features multiple operation modes and multiple pressure settings to suit different oral conditions and users
- BPA Free Upgraded 300ml Extra-Large Water Tank, No Need for Frequent Refills: COSLUS C20 water flosser features an upgraded 300ml water tank, twice the capacity of other old models, eliminating the need for frequent refills and making your oral cleaning more convenient and efficient
- 30 Days Super Long Battery Life, Portable Use Anywhere: COSLUS C20 water flosser boasts double the battery life of others with a powerful rechargeable battery and battery indicator. Just charge for 3 hours and enjoy 30 days of use. It's compact and lightweight, perfect for home and travel use. This water dental pick comes with a USB cable making it an ideal travel kit. Benefit from an exceptionally long 30-day battery life, making it a truly portable solution for your convenience
- IPX7 Waterproof and 3-Year Durability: COSLUS C20 wireless water dental pick boasts superior waterproofing, allowing easy cleaning and safe use during showers. Its upgraded motor delivers a more effective dual-stream water flow and is built to last for 3 years under typical use
- Easy to Use and Gentle Safe: Through the dedicated research and iterative practical validation by our development team, COSLUS C20 water flosser provides multiple operation modes and pressure settings, with three convenient modes to suit the needs of different age groups, while ensuring optimal performance and longevity. Its ergonomic handle and five interchangeable tips ensure a comfortable and versatile experience
- Note: a, Adapter is not included to avoid wasting resources, but you can charge it using any 5V DC adapter with USB-A port on hand. If needed, get from COSLUS. b, For first-time use, set to 'Soft' mode and keep your mouth closed to let your gums gradually adapt to the water pressure. c, Packaging may vary (new or old), but the contents are exactly the same.
Description
Note: Adapter sold separately (to cut waste). Works with any 5V USB‑A adapter. Get one from COSLUS if needed. Packaging may differ, but contents are unchanged. W40 Whitening Flosser C31 Kids water flosser C30 Electric Toothbrush C40 Portable Toothbrush T40 Mini water flosser Why does the COSLUS water dental flosser only have three modes? Developed over 3 years through extensive user testing, this flosser offers 3 simplified modes for ultimate ease of use. Suitable for all ages, from teens to seniors, it is built to deliver a premium lifespan of 3 years. What is the intensity of the water pressure? Which mode should I choose? This flosser features three pressure modes: high (Clean), medium (Message), and low (Soft). First-time users should start with the gentle Soft mode. Any initial gum bleeding is normal and should subside quickly as gums adapt. Do you need to add water a lot during use? No, this water tank has an upgraded, super-large capacity of 300ml, which is enough for a 2-minute cleaning session. Where can you get replacement tips? Nozzle Replacement: For best results, replace every 3 months. Find accessories on our product page, website, and COSLUS store. Does the package include the charging adapter? The adapter is not included to avoid waste. You can charge it using any standard 5V adapter (like one from a phone or tablet). If needed, you can purchase a compatible adapter from COSLUS. Visit the Store Visit the Store Visit the Store
Product Dimensions : 12.2 x 3.74 x 2.18 inches; 10.72 ounces
Item model number : C20
Batteries : 1 Lithium Polymer batteries required. (included)
Date First Available : April 11, 2024
Manufacturer : COSLUS
Best Sellers Rank: #138 in Health & Household (See Top 100 in Health & Household) #1 in Power Dental Flossers
#1 in Power Dental Flossers:
Customer Reviews: 4.4 4.4 out of 5 stars (52,482)
Brand Name: COSLUS
Product Benefits: Gum Health, Prevents Bad Breath, Prevents Cavities, Removes Plaque, Removes Teeth Stains, Whiten Teeth
Model Number: C20
Manufacturer Warranty Description: 1-year warranty, 24-hour after-sales service, Free 30-day refund / replacement
Model Name: C20
Manufacturer: COSLUS
Included Components: Replacement tips, water dental flosser
Item Nype Name: water dental flosser
Item Weight: 10.72 ounces
Manufacturer Part Number: C20(F5020E)
Power Source: Battery Powered
Additional Features: ADA Accepted, Multiple Operation Modes, Multiple Pressure Settings, Multiple Tips, Portable, Lightweight, Noiseless, Non-Slip Grip, Rechargeable, Battery Indicator, Rotatable Tip
Unit Count: 1 Count
Item Dimensions: 12.2 x 3.74 x 2.18 inches
Tank Volume: 300 ml
Recommended Uses For Product: Brace Cleaning, Daily Cleaning, Deep Cleaning, Home, Massage Gum, Office, Teeth Cleaning, Travel, Whiten Teeth
Target Use Body Part: Teeth
Specification Met: ADA, BPA free, ETL, FCC, IPX7
Color: Sky Grey
Material Type: Plastic
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Aug 11
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Black
Set name: Professional Set
This flosser is very effective and easy to use. Excellent quality and every bit as comparable to the brand name product. It is rechargeable, powerful, has different strength settings, and the water reservoir holds a lot of water! Numerous tips are included. It is well built, attractive ,and is marketed at a good price. Great for travel.I am very pleased with this product..
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Reviewed in the United States on July 16, 2026 by Shelly
Color: Black
Set name: Professional Set
I purchased this water flosser because it was available at a discount. I was initially unsure about its performance, as Waterpik is generally considered the leading brand in this category. However, after using this product for about 3 weeks, I can say that it has fully met my expectations. The unit is easy to charge and convenient to use as a cordless device. So far, I have not experienced any water leakage, and the noise level is reasonable. It is not particularly quiet, but it is not excessively loud either. While it is still too early for me to comment on long-term durability, the overall performance has been excellent. The water pressure is strong, and the flossing effectiveness is comparable to what I was looking for in a quality water flosser. Based on my experience so far, I would highly recommend this product to anyone considering alternatives to Waterpik. Brand recognition alone should not discourage you from giving this option a try.
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Reviewed in the United States on June 8, 2026 by DW
Color: Black
Set name: Professional Set
I've used this product several times now, and it's been a great addition to my daily routine. It does an excellent job of getting food particles and plaque out from between my teeth, especially in places that regular floss can be a hassle to reach. The different pressure settings make it easy to find one that's comfortable, and the water tank lasts long enough to get through a full cleaning. I also like that it's cordless and compact, so it's easy to pack when I'm traveling or even keep on the bathroom counter without taking up much space. My mouth feels much cleaner after each use, and my gums seem healthier too. Definitely a purchase I'm happy with.
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Reviewed in the United States on July 6, 2026 by D
Color: Black
Set name: Professional Set
For the quick review, this is fine especially for the price I got it at. Not the best I've used, but not the worst either. I'd prefer to give it 3.5 stars, but it's closer to 4 than 3 for me. Biggest issue is the nozzles don't seat firmly, so they tend to spin in your mouth and you have to adjust as you're using it to floss. They won't fall out or anything, but it takes an adjustment to learn to use if you're switching from a Waterpik. The nozzles are definitely cheap plastic, but they work. Doesn't leak, battery life is good, and it's relatively quiet for a water flosser, though there's no mistaking the sound. Haven't been to see a dentist since I got it, so I don't know about the claims on how clean it keeps your teeth, but it does a fair job at getting food particles from between your teeth out. Overall, it's fine. I don't regret the purchase, but I don't know if I'll buy it again once this one wears out. Now for the long review. Before this I've only used Waterpik flossers, so I'll be comparing them a lot. Off the rip, this isn't as powerful as a Waterpik, not even the portable one. I started using water flossers 10 years ago with a portable Waterpik, then upgraded to a counter top Waterpik Ultra about 6 years ago. This past week it died on me, and this was the easiest (and cheapest) replacement option. I didn't expect amazing quality, and I was right not to. That being said, it's quite good for the price I bought it at. I got this on sale with a coupon for about $20. That's just under half the price of the cheapest Waterpiks. At twice a day, the battery lasted for just over a week. Like I said above, I don't know about the claims on how clean it keeps your teeth, but I'll update my review next time I go to the dentist. So far, it's done a good job of removing food particles which is the biggest thing I bought it for. Water pressure is a little low for me, but again I've been using Waterpiks at the highest pressure for a few years now. It can take a few passes for me to make sure I haven't missed anything in my teeth, and unfortunately that means I find myself refilling the reservoir at least once during most of my uses. Annoying, but I had to do this with the portable Waterpik too so I expected it and didn't dock points. It's only got two pressure settings: clean and soft. There's a massage setting has a pulse between the settings, but I don't use it. I only used the soft setting once and found it to be useless; I could compare it to a 2 or 3 pressure on a Waterpik. The 'clean' setting is comparable to a 5 or 6 on the Waterpik. Useable, but not super strong. Just enough for me to get some stubborn areas on my teeth, so I docked a half point for the highest pressure not being good enough for me. I've read some reviews of people saying that this has extremely strong pressure for a water flosser and others saying it's near perfect. I have to say that is not my experience at all. Could be a difference in manufacturing or any number of things, but for me the pressure could be half again as strong on the clean setting and I'd be much happier. This does NOT come with an adapter for the charging cable. You have to provide your own 5v power brick. I had enough extras lying around from other electronics that I could give it a dedicated adapter, but it is definitely annoying that they can't provide a $2 adapter in the box. For package reduction reasons? That's seriously the excuse they went for? Whatever. It's advertised so no docked points for it. Now the biggest issue I had with this flosser and what made me dock a whole point. The nozzles. Not the variety, that's fine, though I'll say that I have only used the standard nozzle and the tongue nozzle to date. I don't have gum issues that require the periodontal tip or orthodontia that require a the specialized tip for orthodontia. That being said, the problem with the nozzles is their quality and how they're seated in the device itself. The plastic they're made from is thin, and not very durable. For the tongue scraper, this means you can't exert a lot of pressure before the nozzle bends when using it. For the standard nozzle that means it can bend just from the pressure of your cheek and gum pressing on it. The way it's seated in the device itself doesn't help. No nozzle is loose, nor do they leak water, let me be clear there. Once the nozzle is seated, it won't come out and they spray water only as intended. No the issue is, the nozzles spin. In theory this wouldn't be a big deal, the nozzles are meant to spin to allow minute adjustments while they're in your mouth so you can keep that 90 degree angle on your gums. In practice, because the nozzles spin so easily you'll often find the nozzle pointing in the wrong direction in your mouth as you try and floss. This took a real adjustment to get right, and to be honest I'm still adjusting. I still have the nozzle spin the wrong direction on me sometimes, and it is extremely annoying to have to pay so much attention to the nozzle when I'm trying to use it. This is something I wouldn't have even thought of as a problem, except that Waterpik doesn't have it at all. Waterpik solved this problem by having an adjustable nozzle with set turns. Each time you turn the nozzle to a new angle, it clicks into place. Harder to spin the nozzle, but easier to use. Coslus spins freely, no clicking into place and no torque required to move. Because of that I find myself spinning the entire device while I use it to keep the the nozzle at a 90 degree angle to my gums. This is the biggest reason I over my teeth 3 or 4 times when I use the Coslus. The nozzle has spun off center a little, and I want to make sure my teeth are clean. You could try and hold the device at the nozzle and keep the nozzle from spinning, but that's extremely awkward (and the video they provide doesn't show the device being held or used that way so clearly they don't expect if of you). With all that being said, I got this mostly because I didn't want to go back to regular flossing and I couldn't afford getting another really nice Waterpik right now. This was a stopgap so I could keep 'flossing' and not mess with my budget much. In a month or so I'll probably get another countertop Waterpik and this will be relegated to a travel device. For now it does mostly what I need, in a slightly annoying way, and at a very affordable price.
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Reviewed in the United States on August 21, 2025 by Gary
Color: Black
Set name: Professional Set
This is 100% worth the price (which is a great one)! It honestly cleans my teeth so quickly and thoroughly! My dentist will be proud and disappointed (no new cavities or plaque build up). Honestly, if you're thinking about buying it, just do it already. It's great quality too!
Reviewed in the United States on July 15, 2026 by Angela Adams
Color: Black
Set name: Professional Set
I am so tired of dentist telling me to use a waterpick ! I am 67 years old and hate them, or at least I thought I did until I finally ordered this one. So easy to use and fill. Notice it gets out more food then flossing. It is now my go to on cleaning teeth after brushing. I will be getting a few this christmas for gifts. Love it !!
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Reviewed in the United States on July 21, 2026 by Amazon Customer
Color: Green
Set name: Professional Set
I bought this on black friday and haven't regretted it (much) since! Pros: 1. Not very bulky, but I feel it does require two hands to hold 2. I never have to refill during use, since the tank is just the right size 3. I'd say the noise level is pretty modest, similar to an electric toothbrush 4. The battery life is incredible! I haven't had to charge it in 2 weeks!! 5. I got a beautiful turquoise color and it looks so pretty sitting on my bathroom countertop, so it's definitely not an eyesore 6. There is definitely a learning curve when trying to figure out how to use it well without making too much of a mess (I always make a mess, though!) This is my first water flosser and it only took about 2 days to figure out how to use it, but I soaked my mirror, walls, countertops, clothes, and floor during the process, so have towels on hand while you're still learning lol!! 7. It took me a few days to adjust to the water pressure since I have incredibly sensitive gums as well as some pretty bad gingivitis. I have bled maybe once since the 2 weeks I've had this flosser, but my gums would feel sore and achy after every use. That took a while to go away. 8. I love that it comes with a tongue scraper nozzle!! I feel like it really helps with bad breath! 9. I also like how it comes with so many different types of nozzles for everyone's different needs. I just use the standard and tongue scraper, but it also has a second standard nozzle tip, which is pretty cool. You have to replace tips every 2-3 months anyways, so with the two standard tips they supply, you won't have to buy replacements for 6 months!! Cons: NUMBER ONE: THE BIGGEST CON-The charger port is covered by a tiny rubber stopper that you have to take off in order to charge the device. DO NOT LOSE THIS RUBBER STOPPER!!! The very FIRST day I got this, I lost it for about 30 mins and there is no replacement for it. You can't have water get into the charging port or else it won't work, so you really cannot lose this stopper or else you'll have to replace the whole flosser!! They should've made it like the flapper on the tank that is still connected when you take it off to pour water into the reservoir. Trying to keep track of this tiny stopper is a wayyy more stressful than it should be! Lol 2. When you use the flosser, it gets all slippery with water running down the body of it, so make sure you have a good grip! That's why I use it with two hands, so that I'm extra careful to not drop it. Also, try not to accidentally press the buttons during use. Not fun lol! 3. The water reservoir for this flosser doesn't dry between uses, which makes me anxious that it could start to grow water mold. I always leave the flap open to try and help it airdry, but it is still always wet the next day. I haven't had any issues yet with bacteria overgrowth, but I wish there was a way to open it up and dry it. Overall: I'd give this an 8.5/10! For a first time water flosser user, I feel very lucky that this was my first experience! I'm unsure of how well it cleans my teeth, though, so I'll have to check with my dentist during my next appointment to see if there's any improvements. And that little stopper for the charger port brings this rating down 1 whole point because of the mini heart attacks it's given me!! But the ease of use, battery life, color, power, noise, and water pressure are all way beyond my expectations and are truly a treat for your teeth and gums! And the tank not drying or being able to be dried between uses brings the rating down another 0.5 point. But otherwise, this is a really high quality product! It's got a good price and not too many downsides, so I would cautiously recommend to friends if they had a good memory and could keep track of things. But for fellow ADHD folks, this may not be the best, simply because I don't think you can have that stopper replaced or purchase a replica of it. You may have to buy the whole flosser again or just go with a different one that doesn't have such a tiny part you have to keep track of!
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Reviewed in the United States on December 18, 2024 by May Sunfield
Color: Sky Grey
Set name: Professional Set
Not having owned a water flosser before, I really didn’t know what to expect. After a few uses I’m now comfortable with the device. I was quite surprised at how much food particles were still remaining after what I thought was a thorough brushing. The price point is reasonable, the water tank capacity is well sufficient for extended cleaning. Being able to select different pressure levels was also very important as I will be having extensive dental work over the next few months.
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Reviewed in the United States on July 17, 2026 by Étienne