It is very embarrassing to have black knees, elbows and underarms. It can happen to any person whether his/her complexion is fair or dark. This is often due to the accumulation of dead and thick sk.: It is very embarrassing to have black knees, elb
How to Use a Lemon to Lighten Your Skin. Lemon juice is a common folk remedy for lightening skin quickly and cheaply. Some people, however, have a severe chemical reaction when their skin is exposed to lemon juice and sunlight.