Philips HX6851/56 Sonicare Protective Clean 4500 Electric Toothbrush
Feel the difference of a gentle clean with Sonicare's Pressure Sensor while whitening your teeth in 1 week. This toothbrush allows you to customize your brushing to your own needs, with a choice of three modes. Clean mode is standard for superior cleaning. White is the ideal mode for removing surface stains. And Gum Care mode adds an extra minute of reduced-power brushing, so you can gently massage your gums. Your Sonicare brush head and handle are the ultimate team. Enhancing our sonic technology, they give you unrivaled cleaning. High-speed vibrations in your toothbrush handle power up to 62,000 brush movements per minute that whip up your toothpaste into gentle cleaning bubbles, driving them deep between your teeth and along the gum line for exceptional cleaning.
Feel the difference of a gentle clean with Sonicare's Pressure Sensor while whitening your teeth in 1 week. This toothbrush allows you to customize your brushing to your own needs, with a choice of three modes. Clean mode is standard for superior cleaning. White is the ideal mode for removing surface stains. And Gum Care mode adds an extra minute of reduced-power brushing, so you can gently massage your gums. Your Sonicare brush head and handle are the ultimate team. Enhancing our sonic technology, they give you unrivaled cleaning. High-speed vibrations in your toothbrush handle power up to 62,000 brush movements per minute that whip up your toothpaste into gentle cleaning bubbles, driving them deep between your teeth and along the gum line for exceptional cleaning.
Feel the difference of a gentle clean with Sonicare's Pressure Sensor while whitening your teeth in 1 week. This toothbrush allows you to customize your brushing to your own needs, with a choice of three modes. Clean mode is standard for superior cleaning. White is the ideal mode for removing surface stains. And Gum Care mode adds an extra minute of reduced-power brushing, so you can gently massage your gums. Your Sonicare brush head and handle are the ultimate team. Enhancing our sonic technology, they give you unrivaled cleaning. High-speed vibrations in your toothbrush handle power up to 62,000 brush movements per minute that whip up your toothpaste into gentle cleaning bubbles, driving them deep between your teeth and along the gum line for exceptional cleaning.
Feel the difference of a gentle clean with Sonicare's Pressure Sensor while whitening your teeth in 1 week. This toothbrush allows you to customize your brushing to your own needs, with a choice of three modes. Clean mode is standard for superior cleaning. White is the ideal mode for removing surface stains. And Gum Care mode adds an extra minute of reduced-power brushing, so you can gently massage your gums. Your Sonicare brush head and handle are the ultimate team. Enhancing our sonic technology, they give you unrivaled cleaning. High-speed vibrations in your toothbrush handle power up to 62,000 brush movements per minute that whip up your toothpaste into gentle cleaning bubbles, driving them deep between your teeth and along the gum line for exceptional cleaning.
in 5 offers
The lowest price for Philips HX6851/56 Sonicare Protective Clean 4500 Electric Toothbrush right now is $159.00 at The Good Guys, compared across 5 retailers.
The all-time low was $75.00 on 9 May 2026 — today's price is 112% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 13 June 2026.
Last updated at 13/06/2026 06:39:22
Philips ProtectiveClean 5100 Whitening
Next-day delivery $7
Philips Sonicare ProtectiveClean 5100 Electric Toothbrush
Delivery $6.99
Philips Sonicare ProtectiveClean Whitening Electric Toothbrush - Navy Blue by Oz Hair and Beauty
Free delivery between Mon – Tue
Philips Sonicare ProtectiveClean Whitening Electric Toothbrush Navy Blue
Delivery $10
Philips Sonicare ProtectiveClean Whitening Electric Toothbrush - Navy Blue | Above The Collar
Free delivery
originally posted on binglee.com.au
An effective product with useful features.However, I was VERY disappointed with the battery life. As a single user, it was expected that the battery would last for more than 2 years when recharging was every 2 weeks. The first indication of the failure to hold a charge was 7 months into the 2nd year of usage when I experienced a rapid shortening of time between charges, to such an extent that the expected 2 weekly interval of holding charge (as the ONLY user) deteriorated to a time when it failed to hold any charge over 4 weeks from the start of loss. My estimate was that over the period of usage there had been just over 90 times that the battery was recharged.I cannot accept that with this being a high purchase cost item there would be such a short life span. ... MoreAn effective product with useful features.However, I was VERY disappointed with the battery life. As a single user, it was expected that the battery would last for more than 2 years when recharging was every 2 weeks. The first indication of the failure to hold a charge was 7 months into the 2nd year of usage when I experienced a rapid shortening of time between charges, to such an extent that the expected 2 weekly interval of holding charge (as the ONLY user) deteriorated to a time when it failed to hold any charge over 4 weeks from the start of loss. My estimate was that over the period of usage there had been just over 90 times that the battery was recharged.I cannot accept that with this being a high purchase cost item there would be such a short life span. That does not augur well should a family of 4 buy this for their dental needs.Definitely a disappointing purchase.
originally posted on philips.cz
The toothbrush exceeded all expectations after the first use. Feels like a professional cleaning. My teeth are clean, smooth, and shiny. The whitening effect became noticeable on the third day of use. I am sure that my visits to the dentist will become less frequent.Value for money is all about this product. The process of ordering, payment, and delivery was simple and just excellent. I am satisfied and will definitely recommend Sonicare to anyone who cares about the health of their teeth and oral cavity.
originally posted on philips.co.uk
The product was great, but just shy of two years completely packed up. Spent ages trying to find a way to fix the battery that had died but Phillips had done such an amazing job of making the product unrepairable. To change the battery requires literal circuit board soldering - it’s 2022, a battery has been replaceable since the 1980s but they worked it out; make it impossible, warranty is just out - buy a new one!! Keep those shareholders happy and the public will keep buying new ones because battery’s! Well done Phillips on keeping your shareholders happy! The only kudos I can give.
| Rechargeable | Battery- Rechargeable |
| Manufacturer's Warranty | 2 Years |
| Colour | Navy Blue |
| Charge Indicator | Battery indicator- Light shows battery status |
Philips ProtectiveClean 5100 Whitening
Next-day delivery $7
Philips Sonicare ProtectiveClean 5100 Electric Toothbrush
Delivery $6.99
Philips Sonicare ProtectiveClean Whitening Electric Toothbrush - Navy Blue by Oz Hair and Beauty
Free delivery between Mon – Tue
Philips Sonicare ProtectiveClean Whitening Electric Toothbrush Navy Blue
Delivery $10
Philips Sonicare ProtectiveClean Whitening Electric Toothbrush - Navy Blue | Above The Collar
Free delivery
An effective product with useful features.However, I was VERY disappointed with the battery life. As a single user, it was expected that the battery would last for more than 2 years when recharging was every 2 weeks. The first indication of the failure to hold a charge was 7 months into the 2nd year of usage when I experienced a rapid shortening of time between charges, to such an extent that the expected 2 weekly interval of holding charge (as the ONLY user) deteriorated to a time when it failed to hold any charge over 4 weeks from the start of loss. My estimate was that over the period of usage there had been just over 90 times that the battery was recharged.I cannot accept that with this being a high purchase cost item there would be such a short life span. ... MoreAn effective product with useful features.However, I was VERY disappointed with the battery life. As a single user, it was expected that the battery would last for more than 2 years when recharging was every 2 weeks. The first indication of the failure to hold a charge was 7 months into the 2nd year of usage when I experienced a rapid shortening of time between charges, to such an extent that the expected 2 weekly interval of holding charge (as the ONLY user) deteriorated to a time when it failed to hold any charge over 4 weeks from the start of loss. My estimate was that over the period of usage there had been just over 90 times that the battery was recharged.I cannot accept that with this being a high purchase cost item there would be such a short life span. That does not augur well should a family of 4 buy this for their dental needs.Definitely a disappointing purchase.
The toothbrush exceeded all expectations after the first use. Feels like a professional cleaning. My teeth are clean, smooth, and shiny. The whitening effect became noticeable on the third day of use. I am sure that my visits to the dentist will become less frequent.Value for money is all about this product. The process of ordering, payment, and delivery was simple and just excellent. I am satisfied and will definitely recommend Sonicare to anyone who cares about the health of their teeth and oral cavity.
The product was great, but just shy of two years completely packed up. Spent ages trying to find a way to fix the battery that had died but Phillips had done such an amazing job of making the product unrepairable. To change the battery requires literal circuit board soldering - it’s 2022, a battery has been replaceable since the 1980s but they worked it out; make it impossible, warranty is just out - buy a new one!! Keep those shareholders happy and the public will keep buying new ones because battery’s! Well done Phillips on keeping your shareholders happy! The only kudos I can give.
This is a great toothbrush, but it does have a few negatives amongst a lot of positives.Pros - It was much smaller and lighter than my previous electric toothbrush, and also seems much more powerful. I think this has automatically lead to me applying less pressure when brushing, yet I still get a really thorough clean. I’ll admit I haven’t looked after my teeth well in the past and usually experience some bleeding and plaque build-up, but I haven’t had any bleeding when using this brush, and I can see less plaque behind my front teeth especially, which is where it builds up most. The head is much smaller than I’m used to so I’m using less toothpaste, and it’s easier to move around my mouth. Unlike my previous toothbrush, you can’t switch between the modes - ... MoreThis is a great toothbrush, but it does have a few negatives amongst a lot of positives.Pros - It was much smaller and lighter than my previous electric toothbrush, and also seems much more powerful. I think this has automatically lead to me applying less pressure when brushing, yet I still get a really thorough clean. I’ll admit I haven’t looked after my teeth well in the past and usually experience some bleeding and plaque build-up, but I haven’t had any bleeding when using this brush, and I can see less plaque behind my front teeth especially, which is where it builds up most. The head is much smaller than I’m used to so I’m using less toothpaste, and it’s easier to move around my mouth. Unlike my previous toothbrush, you can’t switch between the modes - regular, whitening and gum care - once it’s switched on which I originally thought was a pain, but actually it’s much easier as it remembers your previous setting so you don’t have to select it each time you switch it on. I have had it for nearly 2 weeks now and it’s shown no signs of needing to be charged, so the battery clearly lasts a long time. The charger is also very small and light, handy for travel. I can’t comment on the alert for changing the head as I haven’t needed that either yet!Cons - It buzzes every 30 seconds to alert you to change the quadrant you’re brushing, but I found this alert very very subtle compared to my previous toothbrush, so much so that I often nearly miss it. Equally the alert to tell you that you’re applying too much pressure is very subtle, and the light for this is tiny and right at the bottom of the handle so you can’t see it when brushing. The box only contained one of the three styles of heads - gum care - it would have been nice to get one of each to try. The main negative is the price though - I honestly don’t think it justifies its hefty price tag and I expect the replacement heads, being ‘smart’, will be equally overpriced.One thing to note is that there is a gap between the head and handle - the instructions explain this is normal and you don’t notice it after use - but I would think this would bother some people as it looks like it’s not fitted properly.
I bought an electric toothbrush after having them recommended to me by dental hygienists and dentists for years. I asked one of them about how much I needed to spend to a get a good quality one, but not something more than what I needed. $60 was suggested to me, so after some research I decided on this one because it has a few features I wanted like the pressure sensor. I've been using it for the last 7 months, and when I went to the dentist yesterday for my next cleaning, the hygienist said my gum pockets were down from 4-5's to 2's! The only thing I'd changed about my oral hygiene was this toothbrush, so this has to be the reason! The more inflamed your gum tissue is due to bacteria and such in the gum line the deeper the pockets will be, so cleaner teeth and gums ... MoreI bought an electric toothbrush after having them recommended to me by dental hygienists and dentists for years. I asked one of them about how much I needed to spend to a get a good quality one, but not something more than what I needed. $60 was suggested to me, so after some research I decided on this one because it has a few features I wanted like the pressure sensor. I've been using it for the last 7 months, and when I went to the dentist yesterday for my next cleaning, the hygienist said my gum pockets were down from 4-5's to 2's! The only thing I'd changed about my oral hygiene was this toothbrush, so this has to be the reason! The more inflamed your gum tissue is due to bacteria and such in the gum line the deeper the pockets will be, so cleaner teeth and gums = smaller pockets.
[This review was collected as part of a promotion.] I have been using the Philips sonicare 5100 for a little while now. Initially when I received the toothbrush through the post I was excited, the product looked high tech, excellent quality and easy to use. It comes with a handy travel storage and two toothbrush heads plus the charger lead and instructions.It is compact, clean looking, sleek and stylish! Would sit well in anyone’s bathroom.The set up was easy and I was ready to go within a couple of minutes. I wasn’t sure what to expect when I first used the toothbrush so I went for the default settings initially. I have to say, I did not think I would be as impressed as I was, the toothbrush is powerful and intense but still very comfortable to use, probably ... More[This review was collected as part of a promotion.] I have been using the Philips sonicare 5100 for a little while now. Initially when I received the toothbrush through the post I was excited, the product looked high tech, excellent quality and easy to use. It comes with a handy travel storage and two toothbrush heads plus the charger lead and instructions.It is compact, clean looking, sleek and stylish! Would sit well in anyone’s bathroom.The set up was easy and I was ready to go within a couple of minutes. I wasn’t sure what to expect when I first used the toothbrush so I went for the default settings initially. I have to say, I did not think I would be as impressed as I was, the toothbrush is powerful and intense but still very comfortable to use, probably down to the built in pressure sensor which stops the toothbrush if you are pressing too firmly, a feature I am most impressed with. Having this feature means I have actually changed the way I brush completely, previously I was brushing too hard and probably causing damage! Thanks to the sonicare I will avoid this in the future.Afterwards my teeth felt sparkling clean, The cleanest they have ever felt after brushing!I have some staining on my teeth due to having lingual braces fitted and my teeth moving, this has markedly improved in just the short time I have been using it, particularly using the ‘white’ setting on the toothbrush. I am confident going forward this will only continue to get better using this toothbrush.The toothbrush itself sits well in the hand when using and despite being so powerful does not cause any discomfort in the hands when in use. It is however, quite loud! Not so much that it would wake my small children but just a noticeable noise when in use, noted mainly by my partner in the bedroom next door to the bathroom.The shape of the toothbrush head fits perfectly around the teeth to enable you to clean the gums really well and get every angle around the teeth, this definitely contributed to the sparkling clean feel I experienced.My breath has stayed fresher for longer after using the toothbrush and it’s safe to say I am a Philips Sonicare convert, il never look back now!Overall the product is well made, easy to use, excellent quality, stylish and ticks all the boxes on oral hygiene, whitening aid and gum health.
The vibration frequency is too high which makes my teeth sore. So i am using soft hand brush after about one month from the purchase date. If possible I would like to replace it with another softer model. I have tried softer brush already but not much difference. I am using sonic tooth brush for more than 15 years. The current model with high frequency is causing damage to my teeth. I do follow instruction not to push on your teeth while using.
I was provided this product for free in exchange for an unbiased reviewThe Box: Packaging was simple and well made. Nothing extraneous in the box; the main toothbrush body, 1 toothbrush head, 1 toothbrush cover, cord, and unexpectedly a carrying case, plus setup guide and manual.Setup: Setup was simple and did not require reading the instructions, although I did anyway. Brush came precharged which I always appreciateUse: There are only 2 buttons, start/stop and a brush selector, which seemed to just be a time differential. My first thought was wow, i had never used a true ultrasonic brush until now. Even if you don't brush the full 2+ minutes recommended, your teeth feel cleaner quicker because of the ultrasonic brushing mechanism. It vibrates every 30 seconds ... MoreI was provided this product for free in exchange for an unbiased reviewThe Box: Packaging was simple and well made. Nothing extraneous in the box; the main toothbrush body, 1 toothbrush head, 1 toothbrush cover, cord, and unexpectedly a carrying case, plus setup guide and manual.Setup: Setup was simple and did not require reading the instructions, although I did anyway. Brush came precharged which I always appreciateUse: There are only 2 buttons, start/stop and a brush selector, which seemed to just be a time differential. My first thought was wow, i had never used a true ultrasonic brush until now. Even if you don't brush the full 2+ minutes recommended, your teeth feel cleaner quicker because of the ultrasonic brushing mechanism. It vibrates every 30 seconds to tell you to rotate sections.Design: I like the sleek, modern, but functional design. It doesn't look out of place or clunky. I would have liked to see a sturdier base even at the expense of the overall sleekness, however I have not had any issues with the brush being knocked over while charging. The small clear toothbrush cover was a nice thought but easy to lose or misplace especially in a cluttered bathroom area, I would have liked to see something that covered the brush head and neck more thoroughly while still allowing for evaporation.I prefer the round style brushheads over the standard "rectangle" style toothbrush provided with this product. The shape of this toothbrush made me still feel like I needed to manually brush as opposed to letting the sonic method work. It was also softer than I prefer so I didn't always feel like I got as deep of a clean as I could have.The product only came with 1 brush head whereas others I have purchased often come with at least 2, even providing color-coded tags to keep family use separate. I thought this choice was weird especially considering 1 of the brush modes was made for a different brush head. Without being able to review that mode properly, all those options did was add 30 seconds to the basic 2 minute timer. They titled them "Clean", "White", and "Gum Care" but would seem more natural to title them "2 Minutes", "2.5 minutes" and "3 minutes"Overall: I was satisfied with the product and my teeth feel cleaner in less time than when using my previous electric toothbrush, provided there is no substantial build up requiring a stiffer brush. I would continue to use this product but would probably interchange it with my other electric brush.
I have been using the Sonicare 5100 Protective Clean toothbrush for just over a week now and I think that it is wonderful. The instructions are very clear, the product is easy to assemble as well as use, and has a feature to ease you into the electric toothbrush vibrations as they can be a bit much if you are not already using a similar toothbrush (gradually increasing with each use for 14 uses). I had an older electric toothbrush made by a competitor and I find that the Sonicare is much lighter, more ergonomic and easier to handle than the other toothbrush. I also found that from the very first use my teeth were so clean that it felt like I had polished them leaving an almost slippery coating. I seriously could not believe the results. The charger is small and the ... MoreI have been using the Sonicare 5100 Protective Clean toothbrush for just over a week now and I think that it is wonderful. The instructions are very clear, the product is easy to assemble as well as use, and has a feature to ease you into the electric toothbrush vibrations as they can be a bit much if you are not already using a similar toothbrush (gradually increasing with each use for 14 uses). I had an older electric toothbrush made by a competitor and I find that the Sonicare is much lighter, more ergonomic and easier to handle than the other toothbrush. I also found that from the very first use my teeth were so clean that it felt like I had polished them leaving an almost slippery coating. I seriously could not believe the results. The charger is small and the brush can be placed on it all the time if a plug is available, if not the battery lasts for a couple of weeks and has an indicator to let you know that it is time to recharge. The vibrations are strong and fast so it is great that there is a pressure indicator to let you know if you are brushing correctly (it stops vibrating and a sound indicates that you need to ease up if you push too hard).Although I was so impressed with this brush, I felt like it was difficult to adjust to such a small brush head, my preference would be for a little larger one. The vibration is fast so you will have to figure out the best way to control the splatter/mess that is left on the sink and mirror, I found that tilting my head slightly upwards while brushing was the most helpful. Additionally, I found that the vibrations did get a little strong at times so I think it would be nice to have the option to select a slightly lower vibration level depending on your sensitivity day to day. Most of the features that I would alter are already available in an upgraded Sonicare model (brush head size, adjustable vibrations for each cleaning setting) so it is of minor significance. I love the Sonicare 5100 Protective Clean toothbrush and I wish I had made the switch earlier from the clunkier, slower, and heavier alternative made by the competitor. This is a quality product that I feel delivers the results that it promises. I feel very fortunate that I was given the toothbrush to review, it has changed my oral health for sure!
| Rechargeable | Battery- Rechargeable |
| Manufacturer's Warranty | 2 Years |
| Colour | Navy Blue |
| Charge Indicator | Battery indicator- Light shows battery status |
