No, there isn't. https://www.ultraschallgeraete-test.de/die-testsieger/elle-fce-90/ https://www.beurer.com/web/we-dokumente/gebrauchsanweisungen//GA_Schoenheit/757.107-0116_FC90.pdf

It’s ionic +- one

You have the hot and cold function. Here is a product description: Beurer FC 90 Pureo Ionic Care anti-aging facial, the 4-step solution for visibly smoother skin. The multifunctional ion technology is ideal for cleansing and anti-aging facials. Negatively charged ions reach the skin's surface, while positively charged ions reach the deeper layers of the skin. Impurities are thus transported to the surface of the skin, and the active ingredients are better absorbed by the skin. The kit includes a specially formulated cleansing milk for these applications and the Advanced Hydro Lift skin care cream. The cold and heat function can also be used to stimulate circulation and relax the skin. If you would like to review this product, you should check out forums or go to the manufacturer's website directly.

Input: AC 100–240 V / 50~60 Hz / 0.5 A Output: DC 6.5 V / 2.3 A / 15.0 W

The best thing would be to ask the manufacturer. According to the instructions before not: "Use the FC 90 Pureo Ionic Skin Care only for treatment on the human face.The device is only intended for the purpose described in the instructions for use. Use the appliance only in the manner described. The manufacturer cannot be held liable for any damage caused by improper or careless use". https://www.libble.de/beurer-fc-90-anti-age/p/740878/

It contains a cleaning and care product suitable for the use of this device. You can buy it again via Amazon.