Which of the following is not a therapeutic effect of facial microcurrent treatment?

The correct choice is not a therapeutic effect of facial microcurrent treatment as it suggests the treatment inhibits muscle contraction to avoid expression lines. Microcurrent therapy is designed to stimulate facial muscles, encouraging their contractions rather than inhibiting them. This stimulation can help tone and strengthen the facial muscles, leading to a more youthful appearance.

In contrast, the other options accurately represent the therapeutic effects associated with microcurrent treatment. It promotes collagen production, which is essential for skin elasticity and firmness; improves skin tone and texture through increased blood circulation and cellular metabolism; and can reduce inflammation, aiding in skin recovery and overall health. These positive outcomes make microcurrent treatments a sought-after option in facial aesthetics.