What is a key effect of utilizing a cathode in electrotherapy?

Using a cathode in electrotherapy primarily leads to tissue softening due to the negative polarity of the electrode. When a cathode is applied to the skin, it produces an alkaline reaction which can cause an increase in the hydration of the tissues and promotes softness. This effect is significant in treatments aimed at improving the skin's texture or elasticity, as well as in managing conditions such as scar tissue.

Additionally, the use of a cathode can foster improved circulation and assist in the absorption of topical products applied to the skin, further contributing to tissue softening. This makes it particularly beneficial in esthetic procedures aimed at rejuvenation and hydration of the skin.

In contrast, while cathodes can indeed lead to various effects, none of the other choices accurately reflect the primary outcome associated with their use. For instance, hardening tissues is typically associated with an anode, which has a different effect. The thermal effect is a general response to electrical energy but is not specifically tied to the unique properties of a cathode. Electrolysis, on the other hand, refers to the chemical decomposition produced when electric current passes through an electrolyte, and although a cathode does play a role in this process, it is not the key effect specific to its administration in electro