Aside from adding bacteria to your skin, these forms of contact can irritate the skin, adding to the appearance of redness and causing increased inflammation. In the event that your pimples get ruptured during this process, the oil and bacteria that was trapped inside could spread to the surrounding skin on your face, which causes acne to spread. So, not only will rubbing, squeezing and scratching leave your acne-ridden skin further irritated, it will increase the amount of acne you will have to deal with.
Acne treatment that you apply to the skin: Most acne treatments are applied to the skin. Your dermatologist may call this topical treatment. There are many topical acne treatments. Some topicals help kill the bacteria. Others work on reducing the oil. The topical medicine may contain a retinoid, prescription-strength benzoyl peroxide, antibiotic, or even salicylic acid. Your dermatologist will determine what you need.