Please choose the correct ending to complete the given sentence: Youth: [header] How to prevent cystic acne [title] Use a gentle cleanser made to treat acne. [step] Be sure to select a good acne face or body wash. Start with a typical salicylic acid or benzoyl peroxide wash that you could find at a drugstore.

Ending1: If acne is difficult to treat, you can purchase it for you at a drug store or beauty supply store. [substeps] You can also use a moisturizing or fragrance-free gentle cleanser formulated for skin. Ending2: Just stick with one type of wash for about a month to see if it works for you or not. [substeps] Avoid washing your face and body with a bar soap that is not formulated for acne-prone skin. Ending3: Apply this cleanser only once or twice a week to keep your skin looking smooth and firm. [substeps] A natural acne cleanser made for women is probably best-you can always use another type of wash too. Ending4: [substeps] Do not use a product with alcohol as it may clog your pores and make acne worse. [title] Apply products that clean your skin and facial area.

Answer format: ending1/ending2/ending3/ending4