







Achieve 700% better plaque removal than with a manual toothbrush thanks to the Philips Sonicare 4100 Series sonic toothbrush paired with the C2 Optimal Plaque electric toothbrush head. Enjoy a powerful yet gentle clean, even in those hard-to-reach areas.
The Advanced Sonic Technology provides gentle yet effective cleaning, pulsing fluid between teeth and along the gumline. With the built-in pressure sensor, you know when to adjust the pressure. Ease off and your gums will stay protected!
To help you get used to the Sonicare experience, the EasyStart feature adjusts the power level of the toothbrush over the first 14 uses. Improve your brushing technique with QuadPacer and reach your recommended brushing time of 2 minutes with SmarTimer.
Experience up to 14 days of regular brushing after a single charge, bringing a new level of convenience to your brushing routine (based on two periods of two-minute brushings per day on standard mode).
Did you know that brush heads become less effective after three months? The replacement reminder tracks how often and how hard you brush, then reminds you to replace your brush head once it’s time for a new one.
¹ vs. a manual toothbrush
² based on a study of over 2,600 dental professionals (dentists and hygienists) conducted in the United States, Canada, Japan, China, Korea, Thailand, Germany, the United Kingdom, Switzerland, France, Belgium, Austria, Italy, Spain, Sweden in 2022-2023
Product Dimensions : 2.48 x 4.29 x 8.66 inches; 8.64 ounces
Item model number : HX3681/26
Batteries : 1 Lithium Ion batteries required. (included)
Date First Available : December 13, 2021
Manufacturer : Philips Sonicare
ASIN : B09LD8VFS1
Best Sellers Rank: #339 in Health & Household (See Top 100 in Health & Household) #2 in Sonic Toothbrushes
Customer Reviews: 4.3 4.3 out of 5 stars (53,241) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
The C2 Optimal Plaque brush head with soft, flexible, stain-removal bristles helps whiten and polish your teeth; it also removes up to 700% better plaque than a manual toothbrush
Electric toothbrush for adults providing gentle yet effective cleaning: the Advanced Sonic Technology pulses fluid between teeth and along the gumline for even more effective oral care
Safe and gentle electric toothbrush with pressure sensor: if you apply too much pressure, the handle will pulse slightly, reminding you to ease off the pressure, protecting your teeth and gums
Optimize your routine: EasyStart for a gradual, gentle increase in brushing power, SmarTimer informing when you’ve reached 2 minutes, and QuadPacer to brush each section of a mouth for 30 seconds
Brush head replacement reminder tracks how often and how hard you brush, then notifies you when it’s time to replace the brush head; dental professionals recommend changing your brush head regularly
Rechargeable toothbrush providing up to 14 days of regular brushing on a full charge
Philips Sonicare toothbrush from the #1 dental professional recommended sonic toothbrush brand worldwide²: benefit from Philips expertise to keep your teeth and gums in the best condition
The set includes: 1x Philips Sonicare 4100 Series electric toothbrush, 1x C2 Optimal Plaque brush head, 1x USB charger (power adaptor not included)
10 reviews for Philips Sonicare 4100 Series Electric Toothbrush – Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Deep Pink, Model HX3681/26
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$49.96

Raquel Brueggemann –
My Teeth Have Never Felt So Clean — It’s Like a Car Wash for Your Mouth
This toothbrush??A POWER TOOL.The first time I used it, my mouth was like,“Wow okay, we’re doing professional-level cleaning at home now.”First ImpressionsLightweight, sleek, simple — not one of those overly complicated toothbrushes with 47 modes you’ll never use.Just one button.One mission.Make your teeth SHINE.Using ItThe vibration??STRONG.Like “I didn’t know my teeth could feel THIS clean” strong.My gums were like:“Ma’am… what is this level of attention??”After the first brush:• My teeth felt smooth• My breath felt fresher• My mouth felt like it had a college degreeIt has a built-in timer so you stop rushing and actually brush for the dentist-recommended two minutes instead of your usual 17 seconds.Why It SLAPS• Cleans between teeth like it’s trying to expose secrets• Removes plaque like it owes you money• Still gentle on gums• Quiet enough that I don’t sound like I’m starting a lawn mower at 7AMAnd the vibration pattern is chef’s kiss.It pauses every 30 seconds to tell you to move to the next quadrant — which is helpful because I absolutely forget how time works.Pros• SUPER clean feeling• Easy to charge• Lightweight• Great battery life• Doesn’t have unnecessary features• Dentist-level clean at homeCons• The first time you use it, your brain might rattle slightly (you adjust fast)• It will absolutely expose how badly you used to brushFinal VerdictIf you want clean, smooth, dentist-approved teeth without paying $150+ for a fancy model — get this.Affordable, powerful, simple, and effective.My mouth has never felt cleaner and my dentist is going to think I got my life together.
Steve –
Smooth, Even Clean with Smart Features
After 14 years with my Oral‑B Pro 100, I decided to switch to the Philips Sonicare 4100 Rechargeable Electric Toothbrush (Model HX3681/24) when my old brush finally gave out. I’m glad I did—the Sonicare makes the surface of my teeth feel noticeably smoother and cleaner than my Oral‑B ever did.The sensation was a little strange at first, but I appreciate that the intensity gradually increases over time, which helped me adjust quickly. I also love the SmarTimer and QuadPacer features. Both brushes had 2‑minute timers, but Sonicare’s 30‑second intervals ensure I give equal attention to every section of my mouth. With my Oral‑B, I tended to spend more time on certain areas, so this is a big improvement.The lithium battery is another plus—I don’t have to swap it out nearly as often as I did with my old brush. Time will tell if it lasts as long as my Oral‑B did, but so far, I’m very impressed. Overall, this toothbrush is sleek, effective, and thoughtfully designed. Highly recommend!
Races –
Excellent performance, but would love more color variety!
I am so impressed with the Philips Sonicare 4100 Series. I purchased the Deep Pink and Light Pink versions, and they look great in the bathroom. The advanced sonic technology leaves my teeth feeling incredibly clean, and the pressure sensor is a great feature to ensure I’m not brushing too hard.My only wish is that this series came in a wider range of colors. It would be so helpful if there were options like lavender, purple, green, orange, or yellow so that every family member could have their own distinct color to avoid any mix-ups. Aside from the color limitation, it’s a fantastic toothbrush that I highly recommend!
A in Texas –
Smaller size
My old sonicare that I’ve had for 10 years is getting really loud and annoying so I decided to replace it and saw a good deal on this brush. I didn’t realize that when I got it it would be smaller and not as powerful, but of course that’s the reason it costs less. I think it’s perfect as an entrée into Philips sonicare because it is a very effective brush and since I’m a smaller person, I’ll learn to adjust myself to this. It’s a very very good brush.
Hoi Chun Chan –
vs old models
as good as the old models, but with smaller brush body and smaller battery, i.e. users have to charge it more frequently.Good to bring it when you are travelling
wissam hourani –
سهلة الاستخدام ، قوية وفعالة ، خفيفة.
garchingtom –
Die Zahnreinigung funktioniert sehr gut und ist in der Handhabung einfach und angenehm.Der Akku könnte etwas länger halten.
Hend –
يمكن انا ما احب الطنين ولكن ممكن تناسب البعض الفرشاة ممتازة وتنشحن وتبقى فترة طويلة جداً
Rida –
Amazing
Marie J. –
Nunca había usado uno y escuchaba que eran muy buenos y que valían la pena. Por los dientes sensibles no opté por los que giran, me fui por este que vibra y pensé que quizá sería algo Meh! …Lejos de la realidad. Es un súper cepillo! Se siente MUY POTENTE en velocidad baja hasta puedes llegar a sentir tus dientes en peligro jaja pero no te causa daño, al contrario, con los manuales me estaba lastimando el esmalte y sobre todo había partes que se sentían difíciles de alcanzar. Este lo conseguí en oferta, solo viene un cabezal y es pequeño, alcanza lugares difíciles y se siente suave con las encías, definitivamente lo recomiendo para dientes sensibles. Hay muchas opciones de cabezales para diferentes propósitos. Solo 2 velocidades y muy sencillo de usar.Lo volvería a comprar sin dudarlo.