Oust Powerful All Purpose Descaler, Limescale Remover – Ideal for Kettles, Coffee Machines, Irons and Shower Heads (1 x 3 Sachets)


1 2 3 4 1
Format Liquid sachet Powder sachet Tea bag Concentrated gel Liquid
Quantity 3 sachets treatments 2 sachet treatments 1 tea bag treatment 300ml 500ml 2 sachet treatments 1 tea bag treatment 300ml 500ml
Uses Kettle, Coffee machines, Irons and shower heads Dishwasher and washing machines Kettles Surfaces Surfaces, Kettles, coffee machine, irons and shower heads
Timing 10 minutes 1 cycle 10 minutes 5 minutes 15 minutes


Weight: 100 Grams
Dimensions: 14 x 3 x 9 cm; 100 Grams
Model: 55-OU-02
Batteries Required: No

209 Responses

  1. NormandWarburto says:

     United Kingdom

    Really please with this descaler. We live in a hard water area and this worked really well on our kettle. We tried some home remedies first like lemon and vinegar but they didn’t work very well but this shifted the lime scale really quickly. We even used it on our old kettle which came up almost looking like new. Would definitely recommend!

  2. Anonymous says:

     United Kingdom

    These products did arrive safely and do the job well.
    It was a seniors citizens mistake and I apologise for any inconvenience caused.
    It was a wrong product review

  3. HarrietHowey says:

     United Kingdom

    always had a really gross limescaley kettle until i bought this product, discovered it by chance and never looking back!! this works like a miracle and i no longer need to buy a new kettle!

  4. Anonymous says:

     United Kingdom

    Usually buy this in shops, always use this product as it is very effective, easy to use and value for money.

  5. Zak Islam says:

     United Kingdom

    I lived in London for seven years and had a new kettle for about a year before I moved which was completely filled with limescale. I used this product it cleared the limescale up and now that I live in Yorkshire there has been no limescale in my kettle

  6. Anonymous says:

     United Kingdom

    Easy to use and does what it says on the pack.

  7. TomElishauibt says:

     United Kingdom

    Brilliant product. We used this in both our kettle & baby bottle steamer, they came up perfect!
    We will be stocking up on more.

  8. TysonCPCQgfh says:

     United Kingdom

    Great at descaling the kettle, works well and easy to use. Quick with no mess, will definitely use again.

  9. Anonymous says:

     United Kingdom

    This a a repeat purchase as it does the job quickly and effectively every time. A must-have for anyone living in a hard water area.

  10. Anonymous says:

     United Kingdom

    Easy to use just add to a boiled kettle (not full) and let it eat away that scale.

  11. KarolinASUI says:

     United Kingdom

    Used this to descale the inside of a black kettle. Worked really well – was satisfying to see the plastic and element starting to look like new again. And to my surprise, cups of tea tasted much nicer for some time afterwards.

  12. Anonymous says:

     United Kingdom

    Quick and easy to use. Made my kettle look brand new again!

  13. TeenaAtkin says:

     United Kingdom

    Amazing results for descaling glass kettle – no elbow grease required at all so win win. Recommended

  14. Noelia5128 says:

     United Kingdom

    The product works effectively. Used it on the kettle – came up sparkly clean 🙂

  15. Anonymous says:

     United Kingdom

    Easy to use, great value for money and completely cleaned my kettle – using 2 sachets as suggested. I bought 2 lots anyway but would definitely buy more.

  16. RicardoGwi says:

     United Kingdom

    I used this for the kettle and it worked wonders. Not I used got rid of the limescale in the kettle that was until I used this product. Would definitely be buying a few more packets for future needs.

    Amazing!!

  17. Anonymous says:

     United Kingdom

    Worked amazingly, simple to use and dissolved the lime scale completely in our kettle

  18. Halley7873 says:

     United Kingdom

    Bought this to clean a kettle. Living in a very hard water area the kettles get furred up.

    Boil the kettle and add the contents and it will bubble up quite vigorously so follow the instructions or you’ll have boiling water which is full of chemicals flowing over.

    I have no idea why Amazon wants you to rate the flavour. For god sake don’t try to eat this stuff.

  19. Anonymous says:

     United Kingdom

    Only use one for the first time and I’m so impressed. Well worth the purchase. Fair play. Recommend!

    Very impressive

  20. Anonymous says:

     United Kingdom

    I wish I had taken a before and after photo, my kettle is as good as new again.

  21. MahaliaWollston says:

     United Kingdom 🇬🇧

    Great product and much better value in bulk than buying in the supermarket.

  22. Emma Harris says:

     United Kingdom

    Easy to use and works absolute wonders on kettles! Can’t rate this stuff highly enough, amazing.

  23. Anonymous says:

     United Kingdom

    It’s easy and quick to do. I’ve bought this a few times now and does the job!

  24. Anonymous says:

     United Kingdom

    Have a see through kettle and with hard water it was becoming frosted .
    Easily sorted with one application of this. Good as new.

  25. TamaraKearns says:

     United Kingdom

    We live in a hard water area, the kettle is always chalking up. This is great for putting in leaving for 5 mins and then rinsing out. Perfectly clear kettle after.

  26. RonnyMccartney says:

     United Kingdom

    This to me is the original and most reliable descaler. I’ve used it in my kettle and showerhead numerous times and it always does the job. Sometimes it’s on deal of the day or similar offer where it ends up cheaper than getting it from the supermarket, so good to get a few when that happens. Highly recommend.

  27. Ben Rogerson says:

     United Kingdom 🇬🇧

    I used this to descale a kettle however it did take 2-3 sachets but cleaned it superbly in the end.

  28. Anonymous says:

     United Kingdom

    I usually use a Wilko brand, but saw these on amazon and thought I’d give it ago. Works a treat, removes all that hard water limescale buildup with ease.

  29. Anonymous says:

     United Kingdom

    Great product. Great price, so much cheaper than buying the brand bname. I go through a lot of descaler in my coffee machine, so finding a cheaper option is always a bonus

  30. Anonymous says:

     United Kingdom

    I used to throw the kettles before when I thought theres no fix to it and always bought a new one. But recently I found out about this and it was very easy to use on the kettle. This has made my kettle almost brand new within a matter of minutes. Awesome product, would definity recommend.

  31. Leif8444fydl says:

     United Kingdom

    Golden Review Award: 2 From Our UsersI’ve used a number of cleaning products for my kettle, supermarket brands included. I have tried both powders and liquid solutions but I must say that this particular one has done the best job.

    It was easy to use and the results were really good. My kettle was shiny just like it was new, shame i cant get the outside as good!

    The only negative if i was to flag one is the smell of it… I guess it doesn’t use any additional fragrance and the smell is from the products used to make it. It’s not an offensive smell and it doesn’t linger after use but its not pleasant either.

    Overall I would deffo use it again as the results are the best i have seen yet.

  32. DemetraBalfour says:

     United Kingdom

    Worked a treat on descaling my kettle. Don’t know why they asked me to review its flavour !! I am pretty sure you shouldn’t be drinking it, so have it a zero for taste.

  33. Anonymous says:

     United Kingdom

    I don’t often write reviews but had to on this occasion. My kettle was heavily scaled so I needed 2 sachets but they’re cheap so that’s not a problem. Very simple to use, fast, and did an excellent job. Will definitely use this descaler again.

  34. Anonymous says:

     United Kingdom 🇬🇧

    Great value for money. Does exactly as the box says. Descaled my kettle perfectly. Would buy again.

  35. Alan Ng says:

     United Kingdom

    I was asked to give a star rating for flavour!
    I would not recommend drinking this!

    Great value bundle and it works. Use this all the time for my Coffee machines.

  36. Anonymous says:

     United Kingdom

    I’ve used this brand for years and swear by it. I find the supermarkets rarely sell this one but rather the single pack so this is definitely more value for money.

  37. Anonymous says:

     United Kingdom

    This is a great life saver! It works quickly and does an incredible job. I used 1 bag for the shower head and soaked it in there for a while. All the limescale was completely gone. Great product, highly recommend.

  38. DebFischer says:

     United Kingdom

    Works well although my kettle needs doing a couple of times to remove the limescale so it isn’t as efficient as others I have tried but it is easier to use than others I think. I will buy again 🙂

  39. Anonymous says:

     United Kingdom

    The go to best descaling sachets. This good value for money and these by many accounts are the best brand to descale all type of kitchen appliances incl. kettles, coffee machines etc

  40. Anonymous says:

     United Kingdom

    Absolutely brilliant product, revived my kettle and stopped me buying another. Live in a hard water area so limescale builds quickly. Definitely will buy more as needed.

  41. Anonymous says:

     United Kingdom

    Used on my kettle, but had to use 2 sachets. After the process it is like brand new. It works really well.

  42. Anonymous says:

     United Kingdom

    So I found I wasted one packet by following the instructions, made little difference if you follow them as described.

    The trick is, this stuff only works well when the water is boiling, ie keep your kettle switched on, let it cool then boil it again. Found this on a YouTube video and it works perfectly.

  43. Harley10Nz says:

     United Kingdom

    Brilliant for kettles, irons and shower heads. Gets rid of limescale build up due to hard water. Highly recommended. Good price

  44. Anonymous says:

     United Kingdom

    Took a couple of sachets but did the job on my heavily lime scales kettle. Bargain for 1

  45. Anonymous says:

     United Kingdom

    This worked really well and quickly on my 10 year old kettle which now looks new inside. Far better than other more expensive products I have tried and it left no taint.

  46. Anonymous says:

     United Kingdom

    The water were I live is full of heavy limescale and I’ve tried so many productsto no use, but figured I’d try this one and yes it removed it all! My kettle was clean as a whistle. Also there is very little smell. Will buy again!

  47. Mike Lowe says:

     United Kingdom 🇬🇧

    We live in London and have very hard water, so the kettle was full of limescale. This product worked very well and removed all the limescale first time round!

  48. JeffersonVQSA says:

     United Kingdom

    This is great and can be used on a variety of different items. I’ve used it in our electric kettle, iron machine and shower heads.

    This does exactly what it says on the tin. But I just wish that there could be more packets in this box to make it cost effective.

  49. Anonymous says:

     United Kingdom

    I bought for my glass kettle to keep it clean. I place in there and leave for a few minutes and it’s comes up brand new every time. I don’t even have to scrub anything, simply leave and rinse throughly. Keeps my kettle looking gleaming.

  50. Anonymous says:

     United Kingdom

    I use these on a regular basis to keep our kettle limescale free.
    Boil your half full kettle, stand it in the sink and then tip a sachet in. Starts working instantly.
    They are fantastic. No need to keep buying kettles, just spend a few pounds and your kettle will last longer.
    Very economical.
    Would recommend.

  51. NganLakeqbslngl says:

     United Kingdom

    For 1 I did work but I had to use all 3 packs that comes in the box just to clean the kettle but I will get rid of most of the limescale, also PUT IT IN THE SICK WHEN DOING IT as it will bubble a lot if you have prepared a full kettle and overflow.

  52. MonroeELMxwwxss says:

     United Kingdom

    It’s very easy to use, just cut off the top, 3/4 fill my kettle and put a tea towel in the sink when the kettle is boiled transfer to sink pour in the OUST slowly pop the lid back on the kettle and leave for min 10 minutes, if it’s not perfect pop kettle back on until boiling and transfer back to sink on top of tea towel for another 10 minutes, do this every 2 weeks for me as I live in a very hard water area. Great for irons and shower heads.

  53. Forestfall says:

     United Kingdom

    I ordered this as I had a lot of build up of limescale in my kettle. Was going to buy a new one but thought I’d try this first. And am so glad I did. Kettle now lovely and clean. Very easy to use. Will definitely be ordering this again very soon. Arrived within days.

  54. Anonymous says:

     United Kingdom

    Got rid of limescale in my kettle easy peasy, I wish I had known about this product before. Worked out about 33p worth. Need to try on some other things

  55. Anonymous says:

     United Kingdom 🇬🇧

    This product was easy to use and I got the results I wanted and expected. Great to be able to buy a multi pack for other items that needed descaling too.

  56. Anonymous says:

     United Kingdom 🇬🇧

    I wasn’t expecting much as I live in a very hard water area and my kettle was looking awful. After using this product, my kettle looks brand new! I would highly recommend!

  57. Rose Behar says:

     United Kingdom

    Well known brand that never fails. The only thing with this is buying it at the right price as it can often be quite expensive. But it is a product that’s hard to beat.

  58. ArleenBelmore says:

     United Kingdom

    Works a treat! I tried the old vinegar and bicarb trick before buying this but that never worked out for me. This however cleaned most of my kettle with one sachet. I repeated the process with a second sachet and it now looks alnost brand new!

  59. Anonymous says:

     United Kingdom

    These sachets are excellent. We have moved to a very hard water area. I have to descale our kettle weekly to ensure it remains in excellent condition.
    Instructions are easy to follow and the packaging is easy to tear open.
    These work extremely well and continue to use regularly. I have now started to use them on my steamer and coffee machine too. Excellent price, easy to use and actually work

  60. Anonymous says:

     United Kingdom

    Purchased whilst on offer for 3 pack and arrived quickly as expected. Not used this batch yet, but now have a coffee machine so will come in handy when the de-scaler light comes on, plus been awhile since the kettle was done and don’t think Iron’s ever been done, damn should have bought 2×3 packs.

  61. Anonymous says:

     United Kingdom

    I use this to descale my kettle every 2 months. It is easy to use, just follow few simple steps on the instructions, it doesn’t leave any smell afterwards and it is value for money. The only pitfalls is that you can’t fill the kettle full during descale process, or the water will spill, which mean this leave the top part of the kettle unable to be descaled at the same time. Otherwise it will be given 5 stars.

  62. Anonymous says:

     United Kingdom

    Used this to clean my Dualit kettle, after one usage my kettle looked almost new. Even gave friends a few sachets and it worked well got them too. Will be regularly using these!

  63. Justin Schell says:

     United Kingdom 🇬🇧

    Removed hard water scale in my kettle quickly and thoroughly.

  64. Anonymous says:

     United Kingdom

    Managed to remove years of limescale buildup inside the kettle.
    After two treatments, most had been cleaned away, apart from a small area of concrete-like deposit around the element.
    Kettle seems to be much more efficient and boils noticeably more quickly.
    Process has to be repeated regularly, so will be moving to the better value 500ml bottles.

  65. Anonymous says:

     United Kingdom 🇬🇧

    Very good descaler! Took all the scale off my kettle.
    Very impressed with the product.

  66. Anonymous says:

     United Kingdom

    My kettle was in desperate need of a descale so I used two sachets initially, and now just use one a month (hard water area), so have more than a years worth! Keeps the kettle sparkling inside, you just have to ignore the smell of it, which goes away after you’ve rinsed it.

  67. jillseelmeyer says:

     United Kingdom 🇬🇧

    Cleans the limescale away effectively although you may need to repeat the treatment a couple of times for heavy scaling.

  68. Anonymous says:

     United Kingdom

    Great sorts kettle right out. If really stubborn scale reboil kettle with product i

  69. KateD says:

     United Kingdom

    Nice one.. If pouch could be opened in better way than cutting with scisso

  70. Anonymous says:

     United Kingdom

    Great value for money and makes my kettle squeaky clean.

  71. johnmarksness says:

     United Kingdom

    Cleans my kettle really well. May need 2 goes if kettle is bad like mine was.

  72. MSASusanduh says:

     United Kingdom

    This product made my kettle super sparkly. I did get too excited while using it and knocked the lid off my kettle, rendering it useless. But at least it was clean. My mother in law saw it when she got home and immediately blamed me, OF COURSE. It was my fault though. I said her husband was the culprit but he was too embarrassed to admit it so we shouldn’t mention it – to save him from the shadows of shame. I don’t think she believed me. But it’s in their hands now.

  73. MagdalenaSinnet says:

     United Kingdom

    Absolutely amazing product!
    I almost threw out my kettle because the limescale was just that bad (had never descaled it since buying, stupid I know).
    Used two packs of this and the limescale was cleared completely within 30 minutes!
    It’s saved me having to buy a new kettle so I’ll definitely be stocking up and using it regularly.

  74. Tribute Books says:

     United Kingdom

    Wouldn’t use anything else. Works quickly. Good price. Works great on my kettles.

  75. Cam Bunton says:

     United Kingdom

    We always use Oust for kettle and shower head and it works a treat. I would recommend.

  76. Anonymous says:

     United Kingdom 🇬🇧

    Removed the limescale at the bottom of my kettle in minimal time. Followed the instructions and no residue/smell left after rinsing

  77. Alison DeNisco Rayome says:

     United Kingdom

    he kettle was cleaned in 10 minutes, super powerful! i would really recommend.

  78. LanceHanes says:

     United Kingdom

    I bought these for my coffee machine and kettle. Does the job easily .

  79. Anonymous says:

     United Kingdom

    I clean my kettle with this product and it’s always doing a marvellous job

  80. IndiraMaudsley says:

     United Kingdom

    Needed for the kettle and nepresso machine and works well

  81. Anonymous says:

     United Kingdom 🇬🇧

    Use this product all the time, but if really stubborn scales…have to use 2

  82. Anonymous says:

     United Kingdom

    Best descaler for very hard water! This is fast and easy to use comes with 3 sachets inside 1 box so you get 3 uses from this. We have extremely hard water and use only 1 sachet for the kettle and works perfectly every time. Once you see build up in the kettle just use this i leave it in the kettle for longer then 10 minutes as it says, just to make sure! Always stock up on these.

  83. Anonymous says:

     United Kingdom

    I live in a hard water area so need to descale my kettle at least once a month & this always works very well. Very easy instructions to follow. As a precaution I reboil & rinse the kettle at least 3/4 times afterwards instead of the recommended twice. It is cheaper on Amazon than in the supermarket but have to buy a minimum of 2 packs but as I use regularly this is not a problem. Would recommend.

  84. Pocketnow Deals says:

     United Kingdom

    Been buying this descaler for years wouldn’t dream of using anything else.

  85. AlannaSkyiouzl says:

     United Kingdom

    Absolutely love this product keeps my appliances clean and looking new !!!!

  86. Perla Shaheen says:

     United Kingdom

    Easy to use , best thing I’ve found to remove timescale no scrubbing needed

  87. Anonymous says:

     United Kingdom

    This liquid descaler is much easier to use and clear afterwards than the powder. Efficient and effective.

  88. Anonymous says:

     United Kingdom

    Does the job. A key point to note – I had previously used a different type of descaler which (the pouch) had to be dumped in the kettle with hot water and left alone to do its job. With this model, you have to open the pouch and pour the liquid into the kettle containing boiling water. When doing so, remember to keep the kettle in the sink and you only fill it half way up as the moment the liquid is poured, you will have water bubbling and raising up to the top.

    Be safe.

  89. Megan Klein Zottarelli says:

     United Kingdom

    I recommend this product. It was easy to use and very effective.

  90. LynetteOlivas says:

     United Kingdom

    A great kettle descaler has worked really well for my kettles and really well priced too.

  91. Anonymous says:

     United Kingdom 🇬🇧

    I live in a really hard water area and one sachet of this cleaned my kettle perfectly. Will definitely be buying agai

  92. JamalFalkwwmft says:

     United Kingdom

    This descaler works wonders on kettles, irons and shower heads, those are the items I have used it on to date. It is quick and removes all that nasty scaling in one dose, my kettle was particularly furred up so that was quite a feat. No lasting smell which can sometimes happen with other products. Would recommend.

  93. WilliamsTCOP says:

     United Kingdom

    This is by far the best descaler I have used. Works like a charm for my kettle and steel flask.
    Removes all the limescale that otherwise is very difficult to remove. It works within a few minutes.
    I normally use half of the sachet for kettle and the other half for flask and it still removes all the limescale.
    The best descaler I have used

  94. BrianneHawk says:

     United Kingdom 🇬🇧

    I do clean my kettle regularly so can’t say my kettle was to bad. But this product was excellent the inside of the kettle looked like new. It does say if kettle if really scaled you can use two sachet. Very easy and very quick to use. Will definitely buy again.

  95. Anonymous says:

     United Kingdom

    Got a lot of stuff up in the kettle but not everything. Had to use it twice and still didn’t get everything but definitely helped

  96. Daily Mothering says:

     United Kingdom

    Used this before, it cleans kettle really well by removing limescale. fully recommend

  97. CraigClune says:

     United Kingdom

    I’ve been using this for years, easy to use, effective and we live in a very hard limescale area.

  98. BrooksXLVyrnyi says:

     United Kingdom

    Easy to use, good for the price and does what it is supposed to.

  99. Dena Cassella says:

     United Kingdom

    Great price i bought it when it was 1 really really worth it….

  100. Robin says:

     United Kingdom

    This stuff does exactly what it says – i had a disgustingly furry kettle which couldnt have been cleaned in 10 years, i jest not. 8 sachets later and it had shifted that grot and the inside sparkled like new – it is worth every penny