Summer hair looks

My daughter wanted me to buy her a hair lightening product in the store because all of her little girl friends were dying their hair to get that 'summer look' - just streaks of blond. Well, without wanting to use chemicals or anything because she is young, I took a look at the ingredients on this $6 bottle of spray - lemon juice! The instructions said 'spray on hair and have fun in the sun'! So I mixed a bit of lemon juice in a spray bottle with water and she is spending more time outside to get those streaks in her hair. Inexpensive and not harmful at all!