My parents recently brought hirz Jawad (a.s) for my wife from Mashhad.
1. I was just wondering if she can wear it as a necklace or if there’s a particular way she should wear it?
2. It’s inside a small tube so I’m guessing she doesn’t need wudhu?
3. Should she take it off when going to the bathroom?
4. Finally, are there any a’mal she needs to do personally to make it effective?

1- Yes she can wear it as a necklace or in an armband

2- She doesn’t need wudhu

3- She does not have to take it off when going to the bathroom

4- There are no specific A’mal, however, reading Sura Falaq and Nas in the morning, afternoon and evening is very effective. And also reciting the prayer:

وهذه كانت عوذة النبي (ص) للحسن والحسين عليهما السلام:

اللهم يا ذا السلطان العظيم، والمن القديم، والوجه الكريم، ذا الكلمات التامات والدعوات المستجابات، عافني من أنفس الجن وأعين الانس