As part of Best Buy’s Back to School Sale, you can find a bunch of solid savings on dorm room and apartment-ready devices, like the Philips Sonicare 4100 Electric Toothbrush at $35.99 shipped, matching in price over at Amazon. Normally $40, but fetching as much as $50, this is a very popular model to upgrade your oral hygiene routine with, which has been discounted as low as $32 in 2026. The 28% markdown here cuts $14 off the tag for the third-lowest price we have tracked behind falls to $34 in May and $32 in March. We’ve also rounded up some additional deals on cooking appliances, TVs, laptops, portable speakers, and more for you below, which you can also find on this landing page here.
While it might not bring some of the most premium bells and whistles as Philips Sonicare’s more advanced models, this 4100 electric toothbrush is a great way to make the step up from basic bristle brushes without burning a hole through your finances. I’ve been using one for years now and it’s still going strong, with a built-in pressure sensor that tells me when I brush too hard or not hard enough. It also features a 2-minute timer alongside the brand’s Quadpacer tech that makes sure you’re giing each quadrant of your mouth equal attention.
Best Buy’s other top Back to School dorm deals:
- bella PRO SmartCrisp 8-Quart Touchscreen Air Fryer: $80 (Reg. $130)
- Insignia 3.1 Cubic-foot Mini Fridge with Top Freezer: $140 (Reg. $220)
- TCL 40-inch Class Q3K Series 1080P FHD QLED Smart TV: $160 (Reg. $230)
- Insignia 50-inch Class F50 Series LED 4K UHD Smart Fire TV: $180 (Reg. $300)
- JBL PartyBox Encore Essential 2 Portable party speaker: $250 (Reg. $330)
- Lenovo IdeaPad Slim 3i 15.6-inch Full HD Laptop: $300 (Reg. $500)
- Apple MacBook Air 13-inch Laptop: $1,134 (Reg. $1,299)
- And much more…
There’s even more deals you can jump on to furnish your dorm or stock up ahead of classes beginning, with everyday items available in our home goods hub, while more intelligent tech can be found in our smart home hub.
Philips Sonicare 4100 Electric Toothbrush features:
- Plaque Removal
- 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
- Advanced Sonic Technology
- 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
- Long battery life
- Rechargeable toothbrush providing up to 14 days of regular brushing on a full charge
- 1 dental professional recommended sonic toothbrush brand worldwide
- Benefit from Philips expertise to keep your teeth and gums in the best condition
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