Whether you have acne or not, it is important to cleanse your skin correctly every day. Otherwise dirt and sebum will remain on the skin and contribute to a blockage of the pore. We always advise to cleanse your skin thoroughly at night, before you go to bed.
A typical (bad!) habit of people with oily and acne prone skin is using aggressive skincare products (for example alcoholic products, scrubs...), which lead to dehydration of the skin. By drying out the skin, the sebum glands are stimulated to make even more sebum. So, at the end, there is even a higher sebum production than before. It results in a vicious circle.