There are three obligations of ghusl -furūDu lghusli thalāthah:-
To wash ones mouth- maDmaDah
To wash ones nose -istinshāq
To cover the whole body, flesh and hair, even if they are thick with water
whatever can be washed without difficulty such as the ear, the navel, the moustache, the eyebrows, the inside of the beard and the hair of the head such as the ear, the navel, the moustache, the eyebrows, the inside of the beard, the hair of the head, the outside of the private parts, but he does not include what is difficult to reach such as the inside of the eye or the inside of the skin on the sex organ.