A 2:
1-
It is not permissible
to uncover the `Awrah of the dead because their inviolability during death is like their inviolability while being alive.
2-
Perfuming the shrouds with incense and so on before wrapping the dead in the shroud is an act of Sunnah (action following the teachings of the Prophet).
3-
It is Mashru` (Islamically permissible) to undo the ties of the shroud after placing the dead in the Lahd (a crevice on the side of a grave facing the direction faced for Prayer) and before burial. It is to be noted that uncovering the face of the deceased has no basis in Shari`ah (Islamic law).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.