Please choose the correct ending to complete the given sentence: Youth: [header] How to remove blackheads and whiteheads with a comedo extractor [title] Wash your face. [step] You want to work with clean skin, so remove any makeup or other products that may be on your face. Gently pat the skin dry, taking care not to irritate it by rubbing with a towel.

Ending1: [substeps] If you're washing your face with makeup, use an old toothbrush for this. [title] Use a cleanser formulated for your skin type. Ending2: [title] Bring water to a boil over a stove. [step] Comedones are easier to remove when your pores are nice and wide. Ending3: Then, gently push off any dirt that may be applied to the area. [substeps] Do not remove any primer that may have gotten on your skin while applying the primer. Ending4: [title] Test the makeup remover on an inconspicuous spot of your face before proceeding. [step] Will it work better to remove blackheads or whiteheads? Some people test the makeup remover on a small, inconspicuous area of their face before proceeding.

Answer format: ending1/ending2/ending3/ending4