Hello! Sorry for the late reply. You don't actually need to add water to the lemon juice, you can just use lemon juice on it's own, it still works perfectly. & yes, you can use lime if that's what you have.
Hello! Sorry for the late reply. You don't actually need to add water to the lemon juice, you can just use lemon juice on it's own, it still works perfectly. & yes, you can use lime if that's what you have.
RE: Fun & Quick Experiments: Invisible Ink