Please choose the correct ending to complete the given sentence: Youth: [header] How to remove pimples using floss and mouthwash [title] Wash your hands thoroughly. [step] If you're set on popping a pimple by any method, it's important that you wash your hands before touching your face. The bacteria on your hand, even from just opening/closing the bathroom door, could potentially contaminate the small wound you're about to create or enter other pores on your face.

Ending1: Immediately remove your clothes so that nothing you can touch is exposed. [title] Use a skin astringent-as described above-to sanitize your face. Ending2: [substeps] You should always wash your hands before and after touching your mouth or nose, as well as after kissing. [title] Use antibacterial foaming soap. Ending3: [substeps] Remember that bacteria is one of the leading causes of acne, along with excessive oil and dead skin cells. Scrub your hands with soap and warm water for at least 20 seconds. Ending4: [substeps] Gently lather your hands together to warm them. Your hands should be relatively clean as well.

Answer format: ending1/ending2/ending3/ending4