How can I go blonde without hair dye?

I have medium brown hair and want to go blonde without dying my hair. How can I do this? Can you help ?

If your hair is natural blonde and have got darker when you get older, these days there are product out to help you get that blonde back, such as shampoo and conditioners..They do work I have blonde hair and during winter, when my hair doesn't get another sun light it gets darker blonde and by using product by sun silk as a example of a shampoo and conditioners my hair look nice and blonde again..You should try some there good.

You could try lemon juice on your hair, and letting it get a lot of sunlight. Also, chamomile tea with hydrogen peroxide works well to lighten the hair. If that doesn't work, you'll probably have to bleach it.