How can i get my colored strawberry blonde hair to bleach BLONDE?

I bleached my hair and all i got was strawberry blonde, how can i make it platinum blonde?? Any home remedies or other ideas
How can i get my colored strawberry blonde hair to bleach BLONDE?
Lemon juice works for me! Just buy a lemon or two and squeeze the juice on your damp hair, or buy lemon juice at the store. After putting the juice in your hair (you can comb in through if you want), sit in the sun, or whatever you want to do with your head in the sun. It works even better when you are at the beach and you can first have salt water in your hair and then the lemon juice.