How ultrasound works, why it is so effective – and how to use it correctly.

Professional hygiene is a key quality criterion in nail salons. Besides clean work surfaces and disinfected hands, the preparation of instruments plays a crucial role. Ultrasonic cleaning is a particularly thorough yet gentle method.

But what exactly is ultrasound?
How can it remove dirt that is almost impossible to reach with a brush or hand cleaning?
And why is it particularly well suited for milling cutter bits and fine metal instruments ?

What is ultrasound?

Ultrasound refers to sound waves with very high frequencies, which lie above the range of human hearing. While we can only perceive sounds up to about 20,000 Hertz (20 kHz), ultrasonic cleaning devices typically operate between 35,000 and 45,000 Hertz .

These sound waves are inaudible to the human ear – however, they have an effect in liquids , such as in an ultrasonic bath filled with water.

How does ultrasonic cleaning work technically?

Inside an ultrasonic device are so-called transducers . These convert electrical energy into mechanical vibrations and transfer them to the cleaning fluid.

Here's what happens:

1. The ultrasound waves propagate through the water.

2. Microscopically small pressure changes occur.

3. This creates tiny gas bubbles.

4. These bubbles implode within fractions of a second.

This effect is called cavitation .

Cavitation – the key to thorough cleaning

The implosion of the tiny bubbles creates local microcurrents and minimal pressure pulses directly on the surface of the instruments.

That means:

• Dirt is not sanded off.

• No mechanical friction takes place

• Even the smallest particles are removed from crevices, cutting edges, and milled structures.

➡️ This is precisely why ultrasound is so effective for:

• milling bits

• Instruments with grooves

• hinges

• hard-to-reach places

And all this without putting unnecessary strain on the material.

Why ultrasound is particularly useful in nail salons

Nail salons generate contaminants that are often invisible but hygienically relevant:

• fine nail dust

• skin particles

• Product residues

• organic residues

Simply rinsing or wiping often does not completely remove these residues.

Ultrasound offers clear advantages here:

• even cleaning of all instruments

• reproducible results

• Time savings in everyday studio work

• Reduced stress on sensitive tools

• Support for standardized hygiene processes

What ultrasound can – and cannot – do

An important point for correct classification:

Ultrasonic cleaning

• removes dirt

• is a cleaning or pre-cleaning step

• improves the effectiveness of subsequent disinfection

Ultrasound is not a disinfection method.

• does not reliably kill germs

• does not replace chemical disinfection

• does not replace sterilization

➡️ Ultrasound ensures clean instruments , but not automatically germ-free instruments .

The correct role of ultrasound in the hygiene process

A tried and tested procedure in the nail salon:

1. Manual pre-cleaning
   Remove coarse residue

2. Ultrasonic cleaning
   With a suitable cleaning agent

3. Rinse & Dry

4. Disinfection or sterilization
   According to current regulations

5. Clean, separate storage

This creates a logical, comprehensible process that is both hygienically sound and controllable.

Which instruments are suitable for ultrasound?

Suitable:

• Milling cutter bits (material and manufacturer dependent)

• metal instruments

• Stainless steel tools

• Glass

• heat-resistant plastics

Not suitable:

• glued parts

• sensitive optics

• electronic components

• Materials that are not waterproof

⚠️ Manufacturer's specifications for the instruments are always authoritative.

Cleaning fluid & temperature – often underestimated

The cleaning effect depends not only on the device, but also on:

• the right cleaning agent

• the dosage

• the temperature

Important:

• Use non-foaming cleaners or cleaning concentrates suitable for ultrasound.

• For fresh blood and protein residues, prepare cold.

• Higher temperatures are only necessary for stubborn, non-protein-based soiling.

Common mistakes in everyday studio life

❌ Stacking instruments on top of each other
❌ incorrect dosage
❌ unsuitable cleaners
❌ Too high a temperature
❌ Use ultrasound as a substitute for disinfection

✔ Better:

• Place instruments loosely in the basket

• Follow manufacturer's instructions

• Define clear hygiene procedures

• Separate cleaning and disinfection

Making hygiene visible – a real trust factor

An ultrasound machine in the studio:

• signals professionalism

• demonstrates a structured working method

• strengthens customer trust

Many customers are now consciously aware of hygiene – and directly associate clean processes with quality.

Conclusion: When used correctly, ultrasound equals real added value

Ultrasonic cleaning is available in the nail salon:

• technically sophisticated

• efficient

• material-friendly

• an important component of professional hygiene

When used correctly, it optimally complements manual cleaning and creates the basis for effective disinfection.