According to the information you provided (acne that worsened in the last year, oily face, used antibiotic lotions without effect), it is possible that you might be experiencing acne due to hormonal changes.
Acne is a skin disorder in which pimples appear due to clogged sebaceous skin glands. These glands produce oily secretions, whereas the pores are clogged by cells that are detached from the skin. The oil production might be increased. This might be due to hormonal changes, especially a slight shift in testosterone levels.
Please note that women have very small levels of testosterone (male sex hormone) in the blood which is quite normal. However, just a slight increase might result in specific changes, such as oily skin and a lot more acne.
You might want to visit a dermatologist for a physical examination and laboratory tests. In the mean time, try not to irritate the skin too much. Mild soap with neutral pH and lukewarm water are all your face actually needs.
Too many substances that would remove the oil from the surface would also initiate increased sebum production from the sebaceous glands.
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