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.

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