7. Problem: Brown spots that show up on your skin in your mid-twenties.
Solution: Wear SPF religiously. Hyperpigmentation is real and it can happen to you, young Millennial. Especially if you overexpose yourself to the sun — bronzed skin it's worth it, trust. Not only does sunscreen help prevent brown patches from popping up early on, making you look older than you actually are, it also prevents you from getting skin cancer. Oh, and wearing sunscreen every single day — even in the winter — also prevents premature aging, and wrinkles at age 25 aren't cute, so DO IT!