Please don't use any feminine washes, the vagina is self-cleaning and doesn't need any assistance. If anything, all they will do is disrupt the delicate balance of flora in your vagina and in worst case scenarios, give you a dose of BV.
Ditch whatever it is you are using and leave your vagina alone, it will stop burning in no time.
If you must use soap to wash you labia, use something like Gallinée Cleansing Bar which at least is formulated to match the PH of one's skin. However, you honestly don't need to wash your vulva with anything other than water.