Head, shoulders, knees, and toes . . . Of all those spots, one is way darker than the others! Hyperpigmentation is something that not only affects the skin on your face, but also the area around your joints like knees and elbows, which can darken over time, too. Years of scrapes and nicks can cause built-in elbow and knee pads to form. Luckily, scaly, dry patches that are red or dark can be smoothed out easily. If you're looking to brighten up these areas this bikini season, the solution is in your cupboard. Scroll down to get our three-step body brightening plan and the DIY recipes.