Is it obligatory to remove nail polish from the hands of a deceased woman who was menstruating or in postpartum bleeding, knowing that it invalidates the ritual bath and her body is considered impure, and is it true that it is not permissible to use chemical substances on the deceased?

It is a condition for washing the deceased that the entire body be covered with water, by analogy with the ritual bath (ghusl al-janabah) for the living. This is the view held by Sheikh Ibn Uthaymeen. The scholars have stated that if there is anything adhesive on the body of the deceased that prevents water from reaching it, such as "adhesives" (what is applied to a wound), it must be removed to ensure the entire body is covered by the washing. Accordingly, if nail polish has a substance that prevents water from reaching the nails, it must be removed with any remover, provided that the deceased is not harmed by the substance used for removal.