• Philips Sonicare ProtectiveClean Whitening Electric Toothbrush Navy Blue HX6851-56

    $216
    $13 (6%) off RRP of $229
    $13 (6%) off RRP of $229

    Philips Sonicare ProtectiveClean Whitening Electric Toothbrush Navy Blue HX6851-56

    $216
    $13 (6%) off RRP of $229
    $13 (6%) off RRP of $229
    Add to Wishlist
    4 payments of $54 with
    Own it from $10 per week with Zip Pay
    • Overview
    • Specifications & manuals
    • Reviews
    • Legendary service
    • Delivery, services & returns
    • Questions & answers

    Overview

    The Philips Sonicare ProtectiveClean 5100 (HX6851/56) brings next-level personalisation to your oral care, combining advanced technology with customisable modes to help you achieve visibly whiter teeth in just one week. Designed to remove stains and deliver a deep, dynamic clean, this toothbrush offers three modes — Clean, White, and Gum Care — allowing you to tailor every brushing session to your needs.

    With Philips Sonicare’s signature sonic technology, the brush delivers up to 62,000 brush strokes per minute, pulsing fluid deep between teeth to break up and sweep away plaque for a noticeably fresh, clean feel. The built-in Pressure Sensor ensures you brush safely, gently pulsing to alert you if you’re pressing too hard, protecting both your gums and dental work such as braces, crowns, or veneers.

    The BrushSync feature adds smart convenience, tracking your brush head usage and notifying you when it’s time for a replacement, so you always maintain peak performance. It also comes with a sleek travel case, making it ideal for maintaining your oral health routine wherever you go. With its long-lasting battery life, elegant design, and superior performance, the ProtectiveClean 5100 is the perfect companion for a whiter, healthier smile.
    Whitens Teeth in Just One Week

    Densely packed, stain-removing bristles effectively lift surface stains from coffee, tea, or wine, delivering visibly whiter teeth in as little as one week, giving you a brighter, more confident smile.

    Three Personalised Brushing Modes

    Choose Clean mode for everyday plaque removal, White mode for removing surface stains, or Gum Care mode with an extra minute of reduced power to gently massage and strengthen gums, offering a fully customisable brushing experience.

    Built-in Pressure Sensor

    Smart pressure detection provides gentle alerts when you brush too hard, helping to protect delicate gums and maintain the integrity of braces, fillings, crowns, and veneers, ensuring safe and effective daily cleaning.

    Advanced Sonic Technology + BrushSync

    Generates up to 62,000 brush strokes per minute, creating a dynamic fluid action that drives water between teeth, while BrushSync tracks brush head use and signals when it’s time for a replacement.

    Specifications & manuals

    key Specifications
    Brand
    Philips
    Model Number
    HX6851-56
    Height (mm)
    237 mm
    Width (mm)
    173 mm
    Depth (mm)
    65 mm
    Weight (kg)
    .5 kg
    Finish Colour
    Blue
    Finish Colour Description
    Navy Blue
    Accessories included
    1x ProtectiveClean, 2x W2 Optimal White standard, Travel case, Charger
    Notes
    Items included: Handle, Protective Clean, Brush heads 2 W2 Optimal White standard, Travel case, Charger
    warranty
    Manufacturer Warranty
    2 Years
    other Features
    Features
    • Whitens Teeth in Just One Week: High-density bristles effectively remove surface stains, delivering a visibly brighter smile in just seven days.
    • Three Personalised Brushing Modes: Offers Clean, White, and Gum Care modes, allowing you to customise each session for your specific oral care goals.
    • Built-in Pressure Sensor: Monitors brushing pressure and provides real-time alerts, helping prevent gum damage and protecting dental work.
    • Advanced Sonic Technology + BrushSync: Delivers 62,000 dynamic brush movements per minute, driving fluid deep between teeth, with smart reminders to replace worn brush heads.
    • Safe for Dental Work: Gentle yet thorough cleaning designed for use with sensitive gums, braces, crowns, and veneers.
    • Travel-Ready Design: Includes a sleek travel case, making it easy to maintain your oral care routine on the go.
    • Long Battery Life: Rechargeable battery provides up to two weeks of brushing per full charge, keeping you powered wherever you are.
    • Ergonomic, Elegant Handle: Slim, well-balanced handle ensures a comfortable grip and precise control for every brushing session.
    • Supports Gum Health: Regular use helps reduce gum inflammation, supporting healthier gums and long-term oral health.
    country of Origin
    Origin
    China

    Reviews

    Rating snapshot

    5
    648
    4
    137
    3
    46
    2
    22
    1
    39

    Average customer rating

    Overall
    4.5
    Ease of setup
    5.0
    Build quality
    5.0
    Value of product
    4.0

    Appliances Online's customer reviews are independently managed by Bazaarvoice, ensuring their accuracy and honesty. Vouchers are sometimes offered to verified buyers in exchange for their unbiased review.

    Learn more about Bazaarvoice Authentic Reviews Trust Mark
    What customers say
    Generated by BazaarVoice HarmonyAI using customers reviews

    The Philips Sonicare ProtectiveClean 5100 Sonic electric toothbrush provides a deep, thorough cleaning for the teeth and gums. Many users reported their teeth felt cleaner and smoother, with some noticing whiter teeth and improved gum health. The toothbrush offers useful features like different cleaning modes, a pressure sensor, and a timer. While some users experienced durability issues or found it noisy, the majority were very satisfied with its cleaning performance and user-friendly features.

    Pros
    Cons
    1-3 of 892 reviews
    Jennifer2019-08-28
    So Fresh So Clean
    I absolutely love my toothbrush! I honestly don't have one bad thing to say about this model. I love everything about it the timing reminder, clean setting, gum care, whitening all are excellent. I recommend this toothbrush to everyone. There's nothing better than having a clean mouth! Will be upgrading soon i want to try them all. My only complaint is the price but it's worth saving for!
    Mrs. G2019-09-26
    Great features
    I've been using Sonicare for years, just replaced my older model with this one. I have implants and periodontal issues and Sonicare helps keep my issues under control.
    Maverick752019-11-10
    A good quality product
    The Philips HX6850/10 electric toothbrush seems to be a good quality product with a number of useful features. It is well made and performs it's function as claimed by the manufacturer. Only time will tell whether or not it cleans my teeth more efficiently than hand brushing.

    Legendary service

    The Appliances Online Net Promoter Score (NPS) is based on feedback from 89,897 people, collected between August 2024 to August 2025. Learn more about the Net Promoter Score (NPS).
    Very happy with the customer service
    Sonja, Tewantin, QLD
    Delivery guys were courteous polite and punctual
    Liz, Jindalee, QLD
    Their driving skills in tight spaces were impressive
    Elizabeth, Fountaindale, NSW

    Delivery, services & returns

    Appliances Online is all about legendary service. We offer free next business day delivery, free connection, free removal and free recycling, and we even offer Saturday delivery and, in some locations, a Premium Delivery option that allows you to choose your own 2-hour delivery window.

    Questions & answers

    No-one has asked a question about this product yet. Want to be the first?
    I agree to the terms & conditions
    We're here to help 24/7 - for an immediate answer to your question, chat with one of our Live Chat agents below or call us on 1300 000 500 .

  • Imagine your BBQ rotisserie has suddenly fallen apart, or perhaps you're ready to upgrade to something bigger and better with added features. At Appliances Online, we prioritise finding exactly what you need quickly and easily. You won't have to spend time comparing options to figure out which features match your needs. We want your shopping experience to be smooth and hassle-free, all from the convenience of your home or phone. Offering more than 8,000 unique products from top brands, we offer plenty of options to choose from with confidence. As Australia's biggest online retailer of appliances and home essentials, we're here to make your shopping experience smooth and worry-free. Your time and money are precious, so when you shop with us, you receive extra value with every order. Whether you're searching for something like Philips Sonicare ProtectiveClean Whitening Electric Toothbrush Navy Blue HX6851-56, you'll find just what you need with us. Appliances Online provides you with peace of mind with every order, allowing you to focus on the important things.

    Buying the ideal BBQ rotisseries and other home essentials with the features you want - while staying within budget - can seem daunting. Appliances and home essentials play a big role in making life easier and more comfortable, and that's why we offer a range of services to help you shop through our collections quickly and seamlessly. Appliances Online makes shopping easy and stress-free with services like our Price Match Guarantee*, promising you a great deal on your chosen item. If an Approved Retailer lists the same item at a lower price, simply let us know the price and where you found it, and we'll check the details for price matching. Our commitment to legendary customer service means we're here to support you at every step, providing all the assistance and guidance needed to select the right product for your home. We have a wide selection that goes beyond BBQ rotisseries, and even if you're looking for something like Oliveri NP610TH Nu-Petite Single Bowl Topmount Sink with Tap Hole or Samsung 11kg Smart Front Load Washing Machine Black WW11CG60ADLB, we've got plenty of options to fit your needs. So go ahead and shop for Oliveri Sonetto Single Bowl Sink SN30TU or Blendtec Twister Jar Package 40-620-54 - we're confident we have something for everyone!

    When you're ready to order new BBQ rotisseries or other home essentials from our BBQ Rotisseries group, Appliances Online provides a simple way for you to check if we deliver to your address. To find out if we deliver to you, enter your postcode or suburb in the 'delivery location' bar on our site. You can reach our Sydney-based customer service team 24/7, 365 days a year, at 1300 000 500 to speak with a real person who's ready to assist. With our Free, Next Day Delivery* service covering 95% of Australia's population, your item can usually be delivered as early as the next day (Monday to Friday) as long as it's in stock. In locations where we deliver with our own trucks, we also offer Free Connection services for select models of fridges, washing machines, dryers and microwaves. If you're replacing an old appliance, just choose the free removal service at checkout, and we'll take it away for recycling. You deserve a satisfying shopping experience, so if you're browsing through our Bathroom category or Taps and Water collection, you can count on us for real shopping convenience. Start shopping at Appliances Online today!