Philips Sonicare 4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Inte
4.3 | 52,936 ratings
Price: 39.99
Last update: 01-26-2026
About this item
- Advanced plaque removal: this sonic toothbrush is clinically proven to remove up to 7x more plaque than a manual toothbrush while protecting your gums
- Gentle on gums: Philips Sonicare sonic electric toothbrush for adults offers a superior brushing experience and features soft brush heads with nylon bristles for gentle yet effective clean
- Smart brushing: a pressure sensor that automatically detects pressure you apply, warns you, and reduces the toothbrush vibrations to help protect your gums
- Enhance your oral care routine with sonic technology: 31,000 brush strokes per minute gently clean your teeth, break up plaque, and sweep it away for an exceptional daily clean
- Sleek white design: a stylish white electric toothbrush that enhances any bathroom aesthetic
- The set includes: 1x handle, 1x C2 Optimal Plaque Control brush head, 1x USB charger
- Product Dimensions : 2.48 x 4.29 x 8.66 inches; 8.64 ounces
- Item model number : HX3681/23
- Batteries : 1 Lithium Ion batteries required. (included)
- Date First Available : December 13, 2021
- Manufacturer : Philips Sonicare
- ASIN : B09LD8T445
- Best Sellers Rank:#45 in Health & Household (See Top 100 in Health & Household)
- Sonic Toothbrushes
- Customer Reviews:4.34.3 out of 5 stars(51,440)
Top reviews from the United States
- SteveSmooth, Even Clean with Smart FeaturesAfter 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! - PulgaWorks greatQuality 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.
- German Enrique Uribe Reyes10/10Best electric toothbrush in the market. I really do think that my oral higiene has improved greatly after having started to use this brush. The brush heads are a bit expensive, but it’s worth getting the original ones to ensure great quality brushing.
- E. RaptisNew 4100I'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.
- Raquel BrueggemannMy Teeth Have Never Felt So Clean — It’s Like a Car Wash for Your MouthThis 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.