Flawless, even toned skin contributes to your beauty, while dark patches detract from it. I didn’t realize how dark my elbows were until someone pointed it out. I started to wonder if it was the result of years of planking, or whether there was a hormonal cause.
So I started looking at other peoples' knees and elbows, and realized darkened knees and elbows are a common problem. The skin in this area is thicker and prone to moisture loss. This, coupled with the fact that we tend to lean on our elbows and knees, leads to darker, coarse skin. Other factors that contribute to dark elbows and knees are genetics, overexposure to the sun, dead skin buildup, and frequent rubbing and scratching.