Please choose the correct ending to complete the given sentence: Health: [header] How to use fuzeon effectively [title] Wash your hands before mixing your doses. [step] This may sound inane, but it really does make a difference in keeping the injection-site welts down. [title] Use alcohol pads liberally.

Ending1: [step] Clean the top of the vial every time you pierce it with a needle--even if you just swabbed it 30 seconds ago. [title] Before mixing the water into the powder, tap the vial of powder lightly a few times to loosen the powder. Ending2: [step] An isopropyl alcohol pad or gel provided at drug stores (which is designed to resemble a toilet paper roll) should usually work well. Put the pad on your welts with bare hands. Ending3: [step] You can find them in drugstores and pharmacies. The alcohol will neutralize the acid in the irritated area but do not use non-alcohol pads that contain iodine. Ending4: [step] Dilute one pound of rubbing alcohol with four ounces of water and apply it to your welts. This cleans off any makeup and removes any impurities.

Answer format: ending1/ending2/ending3/ending4