Some people get the bleaching thing wrong. When done right, people who have bleached look good. The problem areas for those who get it wrong are usually the knuckles, elbows and knees.
If you have naturally dark knuckles, you’ve probably been accused of bleaching in the past. Here three things that will lighten your dark knuckles:
1.  Lemon and Sugar Exfoliation
Lemon is a natural bleach agent. Sugar has got the right kind of grit to work as an exfoliator. Pair lemon with sugar and you’ve got a wonder combo. These two ingredients when used properly, will lighten dark knuckles, elbows and knees. Mix a tablespoon of lemon juice with some sugar. Use it to scrub the affected area for 10 minutes especially at night. Wash off with warm water. Apply a moisturising hand cream.

2.  Honey and Lemon treatment
Honey is another bleaching agent. It has antibacterial properties too. Mix equal portions of lemon and honey to make a moisturiser for your hands. For example, 3 tablespoons of lemon and 3 tablespoons of honey. Apply this mixture to your dark knuckles for 8-10 minutes daily. Allow it dry, then wash off with warm water.

3.  Pumice stone
No beauty routine is complete without the mention of the pumice stone. Pumice stone is a light volcanic rock that is used for the removal of dead and hard skin in manicure and pedicure. Use this stone to rub your knuckles while bathing daily to naturally lighten the area