Two ways to whiten skin naturally
1. By using Papaya
Substance papain found in papaya fruit can be useful to cleanse the skin and remove dead skin cells, making the skin bright and smooth. How to use, a blender or papaya puree, mix with a little lemon juice and then apply on the face, body and all parts that want bleached. Do it once a week.
2. Using Lime
You do this by directly rubbing lemon slices on the face or the body part you want bleached regularly every day.
Can also be used as a mask by mixing lemon juice with egg white, let stand for 10 minutes and then rinsed. Do it once a week.
Source : http://tipscarakecantikan.blogspot.com/2013/02/cara-memutihkan-kulit-secara-alami.html