Can lemon juice make your hair lighter?

Lemon juice can lighten hair, but it is not a permanent hair colorant and will gradually fade over time. This is because lemon juice contains citric acid, which can act as a natural bleach. To use lemon juice to lighten hair, mix equal parts lemon juice and water and apply to hair wet hair. Let the mixture sit for 30 minutes to 1 hour, then rinse thoroughly. For best results, repeat this process every week.