Please choose the correct ending to complete the given sentence: Youth: [header] How to prevent acne naturally [title] Gather the necessary materials. [step] Steam cleaning is a simple and effective way to refresh your skin and prevent acne. You will need to following materials : [substeps] 1-quart pot water a clean towel essential oils dried herbs, if you do not have access to essential oils [title] Choose one to two essential oils.

Ending1: [step] You will need multiple essential oils before you can steam clean. For example, you may have several different essential oils at home, but try to experiment with several before sticking to only 1 type. Ending2: [step] Select products that are herbs with varying properties and fragrances. Search online for fragrances that are essential oils such as lavender, mint, lemon, and grapefruit. Ending3: [step] To steam clean your skin, you will need to choose at least four essential oils. Essential oils come in three different flavors: earthy, complex, and calming. Ending4: [step] You should use essential oils that have antibacterial or antiseptic properties. They will kill bacteria and other microorganisms that can infect your skin and lead to acne.

Answer format: ending1/ending2/ending3/ending4