You know that there is an old legend that says lemon juice helps to open the hair color. Before you spend your time and money on becoming the blonde you have long thought of, try this other method.
However, you should know that lemon juice cannot act alone. You have to be exposed to the sun for this to work.
In short, what you need to do is: Take one or 2 grains of lemon, squeeze it and place the juice in a small water bottle inside. By mixing it with water, the acidity will normalize.
The ones that will notice the most changes are blondes, as the effect will be minimal on dark haired girls.
Instead of water, before applying it to your hair, you can mix the lemon juice with coconut oil.
