Ain's/Bonney's Devil Fruit makes people younger right...?
So what if she used it on Brook? Would he grow skin, or just be a smaller skeleton?
What if Bonney used hers to make Brook older? Would he be dust?
In other news
The jump cover that was along with chapter 692 showed Luffy, Sanji, Zoro, and Aokiji drinking milk. Can milk undo the effects of Ains DF, since Milk helps you grow and stregthens your bones and does the body good?
Those are my two questions.