The best way to prevent wrinkles is to make certain that you wear your sunscreen every day even on a cloudy day. You want to make sure that you wear a sunscreen that has has broad spectrum protection. What does that mean? You want to protect against UVA and UVB rays. The best sunscreens contains zinc oxide so look for that ingredient on the label.
You can also wear a broad brimmed hat, you can wear UV sunglasses and you can also wear sun protective clothing.