Which skin type should generally avoid using a rotating brush?

Acneic skin is characterized by the presence of pimples, blackheads, and inflammation often caused by excess oil production, bacteria, and clogged pores. Using a rotating brush on acneic skin can exacerbate the condition for several reasons. The mechanical action of a rotating brush might irritate inflamed areas, potentially leading to more redness, swelling, or even breaking the skin, which can introduce bacteria and worsen acne.

Furthermore, the use of a rotating brush can disrupt already compromised skin barrier function, making it more susceptible to infection and irritation. Instead of benefiting from the exfoliation and cleansing that a rotating brush provides, individuals with acneic skin might find that it aggravates their skin condition. Therefore, it's recommended that those with acne concerns opt for gentler cleansing methods that do not include abrasive or mechanical elements.

In contrast, other skin types like dry, sensitive, and normal skin have distinctive traits that allow for certain exfoliation methods or tools, although caution may still be advised based on individual sensitivity or reactions to different treatments.