To lighten up dark knees and elbows.

1 tablespoon ground ginger.
1 lemon and half juice.
1 teaspoon salt.

Mix all ingredients together,  mask past should be as thick as stirred yogurt, and you can add more lemon juice if its wasn't enough.

Apply this mask on clean skin, and leave it on for 20-30 minutes, or until the mask is dry, then rinse and apply sweet almond oil on your knees and elbows, sweet almond oil helps lighten the dark spot.

This mask must be applied everyday for month or more. and with daily use your skin will be more soft and lighter.