Your sudden acne is probably an internal problem. I strongly recommend that you go to a famous local Chinese medicine hospital to see a dermatologist. That's the right medicine over there How much does it cost to see a hospital, dozens to hundreds. My classmate saw it, and it was very effective, at least there was no acne. Pay more attention to cleaning and proper maintenance. I think your skin will get better if you solve the internal problems. Skin care products and the like are generally temporary solutions rather than permanent solutions.