By Heather Haemker

Over the summer, she sunbathed, swam, stayed up too late, drank too much and shampooed with whatever was on sale. Her conditioner? A few drops of her coconut-scented sunscreen. Now it's fall, and she's back to the real world of long hours at the office and getting her life (and her hair) back on track after months of neglect. Today, she's sitting in your chair, and her hair is begging you for an intervention! It's dry. It's brittle. It's breaking. Here are some great tips and products to restore her lackluster locks to their full,…