Redness and swelling after squeezing acne indicates an inflammatory reaction, usually due to bacterial infection caused by unclean hands or instruments. In this case, you can apply antibiotic ointment to the affected area, such as mupirocin ointment, or fusidic acid cream, erythromycin ointment, etc., can be applied twice a day or more, the redness and swelling of the pimples will gradually dry up or subside. The treatment of pimples should not be squeezed with bare hands, for one thing, the effect is not ideal, and secondly, it is easy to cause infection. You can use topical retinoic acid preparations, such as adapalene gel or acne inhibitor gel, etc., which are more effective for acne. Acne patients should pay attention to eat less fried food and desserts, as well as spicy and stimulating food, eat more vegetables and fruits. Therefore, acne should not be squeezed by hand, and try to choose the right medication to be taken orally and externally.