Philips Sonicare

Philips Sonicare 4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology Pressure Sensor Two Intensity Settings

655+ bought in the past month

$39.96$49.96

About this item

  • 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)
$39.96
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Product details

BrandPhilips Sonicare
Age Range (Description)Adult
Special FeaturePressure Sensor,Brushing Timer,Rechargeable,Lightweight,Ergonomic
Power SourceBattery Powered
Item Firmness DescriptionSoft

Technical specifications

product_dimensions2.48 x 4.29 x 8.66 inches; 8.64 ounces
item_model_numberHX3681/26
batteries1 Lithium Ion batteries required. (included)
date_first_availableDecember 13, 2021
manufacturerPhilips Sonicare
best_sellers_rank#132 in Health & Household ( See Top 100 in Health & Household ) #1 in Sonic Toothbrushes

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Customer reviews

4.352,280 ratings

Customers say

Customers find this electric toothbrush to be a solid product that works well and cleans teeth effectively.

★★★★★

Smooth, Even Clean with Smart Features

SteveDecember 3, 2025

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! Read more

★★★★★

Works great

PulgaNovember 28, 2025

Quality made product that works very well. Brushes my teeth well, dental hygeniest is happy with my tooth and gum health. Product is easy to use and a single charge last a really long time, using it 2x a day. Travel case for heads is nice but I use a regular toothbrush when away from the house unless overnight. Read more

★★★★★

Best Toothbrush!

Shelby EricksonDecember 31, 2025

I will never return to a regular toothbrush again. This electric toothbrush works wonders at removing plaque, and takes so much less effort compared to a regular toothbrush. It is very comfortable, and it has a small but powerful brush head. I charged it once and used it twice per day for three weeks before I had to charge it again. I love it so much and highly recommend! The pink one is so cute! Read more

★★★★☆

New 4100

E. RaptisNovember 24, 2025

I've had my first Sonicare for 9 1/2 years, and while it still works, the battery light never reaches full any more, and this is the first time I've seen them on sale, so I went for this one. I paid around $30 instead of $50 on Black Friday sale. They say they don't give you a wall plug for sustainability, which is clearly a falsehood. If they cared about sustainability, I'd be able to use my perfectly good previous wall charger. Do they honestly think we want to charge our toothbrushes from our laptops? It's ludicrous. I found a link on their website where you can request a wall charger brick. In the mean time, I'm using one I already had. Who knows if it's appropriate. I should have just stuck with my old charger. One star off for this. The toothbrush itself is fine. I picked this one because I don't think they need more than one button. It has all the features I need: timer and high or low intensity. Also the pressure sensor is a nice touch. It's thinner to hold and makes a lot less noise. I like the change for that reason alone. All my variety of Sonicare and non-Sonicare brush heads work. So far so good. We'll see if this one lasts 9 1/2 years, though. Read more

★★★★★

My Teeth Have Never Felt So Clean — It’s Like a Car Wash for Your Mouth

Raquel BrueggemannNovember 22, 2025

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 Impressions Lightweight, 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 It The 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 degree It 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 7AM And 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 home Cons • The first time you use it, your brain might rattle slightly (you adjust fast) • It will absolutely expose how badly you used to brush Final Verdict If 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. Read more

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