Please choose the correct ending to complete the given sentence: Health: [header] How to get rid of neck acne [title] Wash your neck at least twice a day. [step] Keeping your neck clean is the best way to start getting rid of neck acne. You should take a shower to wash your neck at least once per day.

Ending1: If you sweat a lot, such as after a workout, then take another shower. [title] Use a gentle cleanser to clean your neck. Ending2: Let your head sit still in the water for five minutes. When you rinse, your neck acne should be momentarily gone. Ending3: If you don't want to wash every day, consider going for a regular shower once a day. [substeps] Use a circular motion to wash your neck, concentrating on the most prominent area of your neck, such as the top of your ears, temples, the back of your neck, and the hollows of your cheeks. Ending4: [substeps] Make sure you don't rub salt on your neck acne. This can become discolored and make it more noticeable.

Answer format: ending1/ending2/ending3/ending4