Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to remove deep facial wrinkles [title] Wear sunscreen. [step] Studies have named the sun as the no. 1 cause of wrinkles.

Ending1: Wear a broad-spectrum (uva and uvb) sunscreen with an spf of at least 30. There is no need to go above spf 50. Ending2: To counteract this you must : [substeps] Stay off your facial skin for at least 2-3 days after the sun goes out. If you think you may have a wrinkle, consult with a doctor before applying sunscreen. Ending3: The rays it interacts with can cause them. Use a sunscreen with spf 15 or higher at all times. Ending4: One additional important factor is the degree to which sun exposure will (or will not) diminish deep facial wrinkles, over time. Exposure to the sun is defined in a number of ways.

Answer format: ending1/ending2/ending3/ending4