There are a few effective methods to get rid of dark knees and elbows, such as using lemon juice, baking soda, exfoliating scrub, sugar, olive oil or moisturizer. For example, a simple way to lighten dark areas on the elbows and knees is to apply lemon juice to these areas and leave it on for 15 minutes before rinsing off the juice with water.
Alternatively, an exfoliating scrub for elbows and knees can be made by combining lemon juice, sugar and a few drops of olive oil. Rub it into the elbows and knees for about five minutes and then rinse it off with soap and water. A moisturizer containing glycolic acid or alpha-hydrox is also useful for removing dead or scaly skin.
Another natural remedy is to combine two tablespoons of baking soda with enough milk to make a paste.. This remedy can be utilized every two days.