I don't know where the poor skin quality you mentioned is mainly concentrated! If it is on the thigh, it will not affect life and work. If it is mainly concentrated on the face, it will be more troublesome! However, for oily skin, more attention should be paid to diet. There is no drug for thorough treatment, and it is repeated.
Suggestion: Eat more fruits and vegetables, smoke less, drink less, and ban spicy and irritating food. It is best not to eat barbecue and food stalls in summer!