Q. Does nail polish have to be removed from a deceased woman when performing her Ghusal?
A. One of the prerequisites for a Ghusal to be valid is that water must reach all parts of the body. This is applicable to both, the living and the dead.
Accordingly, if water does not reach the nails due to the non-permeable nature of the nail polish, the Ghusal will be invalid. As such, all efforts must be made to remove the nail polish so that water reaches the nails. (Ahsanul Fataawa 4/237)
Allah Ta’ala Knows Best
Mufti Ismaeel Bassa