How to change the nozzles on Xiaomi Derma DX115C

The Xiaomi Derma DX115C has proven to be an effective tool for deep skin cleansing and tone enhancement. However, like any high-tech gadget, it requires regular maintenance to maintain hygiene and efficiency. Changing the nozzles is a key step in the care of the device that cannot be ignored.

Many users mistakenly believe that metal plates last forever, but that's not quite true. Over time, microscopic surfaces can appear, and rubber seals lose their tightness, which reduces the power of ultrasonic vibrations. In this article, we'll detail when and how to replace consumables so that your Derma DX115C works like a new one.

Before you start disassembling or replacing items, make sure the device is completely off and disconnected from the charger.This is a basic safety rule that will protect the electronics from power surges and prevent accidental switching on in the hands.

Design of the working area of the device

The working part of the Xiaomi Derma DX115C is a complex system, where the metal blade is only the visible part of the iceberg, hidden under it are contacts for transmitting ultrasonic vibrations and sensors that control the touch of the skin, which is why it is important to understand whether you are changing the working plate itself or only the protective element.

The attachment in this model is a magnetic lock with additional fixation, which allows you to quickly change the applicators, but requires care so that you don't damage the magnets or put dirt in the docking unit. Any foreign objects between the contacts can disrupt the device.

Notice the condition of the sealing ring around the base of the nozzle, if it is stretched or torn, moisture can get inside the body, which will lead to irreversible consequences for the electronic filling, leakage is the main enemy of corrosion in the bathroom.

⚠️ Warning: Never attempt to remove the nozzle by force unless it is easy to move.The device may have residual pressure or the latch may be blocked by contamination.

To visually monitor the integrity of the structure, it is recommended to use a magnifying glass or macro mode of the smartphone camera, which will help to notice microcracks that are not visible to the naked eye, but can cause failure during operation.

When replacement of the nozzles is necessary

The need for replacement can be determined by a number of indirect signs that manifest themselves during operation, first of all, this is a decrease in the efficiency of cleaning: if the scrubber stopped knocking out dirt or massage movements seem weaker than usual, the problem may lie in the wear of the working surface.

The second is visual defects, scratches, chips of enamel or a change in the color of the metal indicates that the material is exhausted, the damaged surface can injure the delicate skin of the face, so such signals can not be ignored.

It's also worth considering replacing if you notice a leakage problem. Is there any water left inside the case or at the joints after the procedure? This is a sure sign that the seal needs an urgent replacement, and ignoring this fact will lead to oxidation of the contacts.

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Only when it's broken.
Six months
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The average lifetime of the original nozzles with heavy use (3-4 times a week) is from 6 to 12 months, but with care and proper cleaning after each procedure, they can last longer, retaining their functional properties.

Tools and training required

You don't need a sophisticated professional tool to do the replacement procedure, the whole kit is usually bundled with the device or easily purchased from a hardware store, and the main thing is to prepare a clean, well-lit workplace.

You will need the following items:

  • 🧼 New compatible nozzle for Xiaomi Derma DX115C.
  • 💧 Alcohol solution or special disinfectant for surface treatment.
  • 🧵 Wormless napkin or microfibre for cleaning contacts.
  • 🔦 Lights for inspection of the docking station.

Before starting work, wash your hands thoroughly with soap to avoid putting fat or bacteria on new parts. Hand cleanliness is the first step to successful maintenance of any medical equipment.

☑️ Preparation for replacement

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Do not use aggressive chemicals or abrasive powders that can damage the coating of the case, and a soft soap solution and warm water are sufficient for pre-cleaning if there are visible contaminants on the device.

Step-by-step instructions for replacement

The process of replacing the nozzle on the Xiaomi Derma DX115C is simple enough, but requires attention to detail. Follow the algorithm to avoid damaging the fragile mount elements.

First, take the device with one hand, holding the body securely. With the second hand, gently tuck the edge of the old nozzle. Some versions have a small protrusion or groove where it is convenient to insert a nail or a plastic blade. Movement should be directed upwards and slightly to the side to release the magnetic lock.

After removing the old part, carefully inspect the seat on the housing. There should be no dust, pile or traces of oxidation. Wipe the surface with a dry lilaless wipe. If you see contaminants that are not removed by a dry cloth, lightly moisten the napkin with alcohol, but do not pour liquid directly onto the device.

Sequence of action:


1. Turn off the power.




2. To smack the edge of the nozzle.




3. Take off the old detail.




4. Clear the contacts.




5. Set a new nozzle before the click.

Now, take the new nozzle and match its contacts with the back end on the body. You should feel the magnetic pull. Press evenly across the nozzle area until you have a characteristic click or feel like you're in a tight landing. Make sure there's no skewing and the edges fit tightly around the perimeter.

What to do if the nozzle does not stand in place?
If you feel resistance, don't push hard. Check if there's a new nozzle inside the protective film (often new parts) that needs to be removed. Also check if the groove pollution is disturbing. If the problem persists, try swaying the part slightly from side to side so that the magnets "feel" the right position. Types of compatible nozzles For the Xiaomi Derma DX115C, accessories manufacturers have developed several variants of work surfaces, each of which solves the problem. Understanding their differences will help you choose the appropriate option for replacement. The classic metal blade is designed for ultrasound, which is effectively removed from the surface, which is the main one that is removed with the cleaner. There are also specialized modifications: 🔹 Texture surface 🔹 Nozzle with silver ions - has an additional antibacterial effect. 🔹 Massage head - rounded for lymphatic drainage massage without scrubbing function. When choosing consumables, always check the labeling. Compatibility is determined not only by physical size, but also by the location of contact groups. Using an inappropriate nozzle may cause the device to fail to turn on or to function incorrectly. Type of nozzle Material Purpose Life Standard Stainless Steel Ultrasonic Cleaning 6-12 Antibacterial steel. + Ag Coverage Cleaning sensitive skin 4-8 Massage Medical Silicone Lymphatic Drainage 12+ Texture Titanium Alloy Deep Peeling 3-6 moss. Remember that using non-original or cheap analogues can affect the frequency of ultrasonic vibrations, which will reduce the effectiveness of the procedure or make it unpleasant for the skin. Care and disinfection after replacing the new nozzle, you need to carry out its initial treatment. Even if the part was in sterile packaging, contact with air and hands requires disinfection before first use. Wipe the work surface with an alcohol solution of 70% concentration or a special lotion to disinfect the cosmetic tool. This will kill potential bacteria and wash the factory lubricant if it is present. Regular care requires disinfection of the water before the first use. Do not leave the device moist in a closed case, as this is an ideal environment for the reproduction of microorganisms and the appearance of mold on rubber seals. ⚠️ Warning: Do not disinfect boiling water, aggressive solvents (acetone, gasoline) or chlorine-containing agents. These can destroy the metal structure and damage plastic mounting elements. DX115C In a dry place, away from direct sunlight and heat sources, and proper storage is half the success of long-term use of any electronics, and problems and solutions, even when installed properly, can cause nuances in the operation of the device. Most often, users are faced with a situation where the device does not turn on after replacing the nozzle, which may be due to the fact that the contacts do not close tightly. Also check if moisture has entered the connector - if so, the device should be allowed to dry within 24 hours.If you notice sparkling or hear a crackle, stop using immediately. In this case, further independent operation is prohibited, consultation with a specialist of the service center is necessary. 💡The main problem with replacement is getting moisture into the contact group. Careful drying and checking the leakage before switching on solves 90% of the problems with performance. Sometimes users complain about the weak effect after replacing. Make sure you use the original nozzle. Cheap copies often have a smaller metal thickness or irregular geometry, which quenches ultrasonic waves. Can you wash the nozzle in the dishwasher? Absolutely not. The high temperature and aggressive detergents in the dishwasher will destroy the protective coating of the metal and deform the seals, which will lead to loss of leakage and corrosion. How often should you change the nozzle if the device is used rarely? Even with rare use, the materials age. It is recommended to change the nozzle at least once a year, since the rubber loses its elasticity and the metal can oxidize from contact with air and cosmetics. Where to buy original nozzles? It is best to purchase consumables in official stores of the brand or from authorized partners. It is recommended to change the film, which is necessary to use the first to use the film with the new skin. It blocks the skin from contacting the ultrasonic waves, making the procedure completely useless. The film is often transparent and invisible when inspected cursoryly. Does replacing the nozzle affect the warranty? Self-replacement of consumables provided by the design does not void the warranty on the main device. However, if you damage the case or electronic components in the process of careless replacement, the warranty may not be recognized.