What is the criterion that makes cosmetic procedures—permissible for removing deformities or burns or restoring something to its original state—enter the domain of the forbidden?

Cosmetic surgery is not permissible for enhancing beauty; rather, it is permissible for removing a defect or harm with the intention of restoring an organ to its natural state. For cosmetic surgery to be permissible, there are conditions: it must achieve a legitimate benefit, it must not result in a harm greater than the benefit, there must not be another less impactful treatment, and it must not violate religious texts, such as those concerning altering God's creation or forbidden imitation, while observing the rules of medical treatment.

As for the legal rulings:

1. Necessary and essential surgery that restores the shape and function of organs to their natural state, or corrects congenital or accidental defects that cause harm, or removes psychological or physical disfigurement, is permissible.

2. Enhancement surgery that alters a person's normal creation without a medical necessity is not permissible.

3. Weight loss surgery is permissible if the weight causes a medical condition and no other means are available, provided there is no risk of harm.

4. Removing wrinkles through surgery or injections is not permissible except for a medical condition and provided there is no risk of harm.

5. Repairing a ruptured hymen due to an accident, rape, or coercion is permissible. However, repairing it if the rupture was due to committing an immoral act is not permissible.