During tattooing, there is a risk of infection by various microorganisms transmissible through blood. The entry of the tattoo needle into the skin can introduce a variety of microbes if the needle has not been sterilized.

Jewelry cleanliness is critical to prolonging its life span. Sometimes, keeping jewelry in storage for some time can promote the accumulation of mites or dirt on the pieces. Also, when they are used frequently, in addition to accumulating various microorganisms or harmful substances, the color of the jewelry can be altered. The latter can be caused by the pH of the skin of the person wearing the piece, the effect of sweat, creams or perfumes.

An ultrasonic cleaner is a device that allows effective cleaning of delicate items or hard-to-reach areas, removing dirt and bacteria that other cleaning devices are unable to remove. They are usually formed by a container, in which the object or objects to be treated are introduced, immersed in a special liquid through which high frequency waves propagate, generating an effect called acoustic cavitation through which an optimal cleaning is achieved.