Please choose the correct ending to complete the given sentence: Youth: [header] How to reduce appearance of stretch marks during puberty [title] Moisturize your skin. [step] Stretch marks are caused by a breakdown in the production of collagen, which makes up the connective tissues of your skin. Keeping your skin moisturized may help reduce the appearance of your stretch marks.

Ending1: [substeps] Use a natural moisturizer with spf 15 or higher. Cleansing products that are spf 15 or higher are best. Ending2: [substeps] You may want to use a richer moisturizing cream, such as cocoa butter. Other options may have special ingredients such as collagen and elastin that can boost the effects of the moisturizer on your skin. Ending3: [substeps] Applying moisturizer is the most effective thing you can do to reduce the appearance of stretch marks. You can apply it lightly, which has the added benefit of neutralizing your appearance. Ending4: Follow a facial regimen that does not involve moisturizing. [substeps] Use a facial moisturizer that contains spf 30 or higher to avoid flakiness on your skin.

Answer format: ending1/ending2/ending3/ending4