When caring for skin with acne, properly washing your face is very important. Bacteria on the face often makes the acne problem worst.
First of all, you have to ensure that your hands are clean by properly before washing your face. Therefore, wash them with soap and warm water before using them to cleanse your face. If your hands are not clean, then you are just transferring bacteria from your hands to face.
You should wet your face with lukewarm water first before applying the facial cleanser. The reasoning is that warm water helps open up your pores. This allows the dirt and bacteria trapped inside to be cleaned off more easily.
You should gently rub the facial clenser on the different areas of your face. Be sure cover all the areas of your face to ensure all the oil and dirt on your face is being removed. Also, avoid scrubbing your skin.
At the end, wash your face off with cold water, which helps closes the pores. When drying your face off with a towel, be sure that the towel you are using is clean.
Also this is optional but i would highly recommend using a moisturizer or face lotion afterward so that your face won't dry out
Also, while it is important to keep your face clean, excessively washing your face will not help remove acne. In fact, washing your face too much can leave your skin too dry.