Hi um I have been trying to get rid of my dark knees I have clean them every time I'm taking a shower but it dosen't work that much I have used lotion lemon juice and nothing works and I want my knees to be clean so what can I use?

You can use a skin lightening cream that you feel comfortable with and the saran-wrap/plastic bag method. You will do this at night before you go to sleep. This is kind of awkward and uncomfortable but it helps the cream penetrate better. Lather the cream on thickly on your knees and elbows. Take saran wrap/plastic bag and wrap it around both knees and elbows. Do this consistently for at least two months and you apply sunblock (at least spf 70) to these areas and keep them moisturized: you should see results.