Sometimes 'wash off' implies vigorous scrubbing, not just gentle washing.

Physical Effort

'Wash off' can mean that some residue might remain despite efforts to clean.

Partial Removal

Repeated attempts may be necessary to wash off certain substances.

Often used after a physical or dirty activity to indicate cleaning up.

'Wash off' conveys a sense of renewal after feeling sweaty or dirty.

Metaphorically, it can suggest getting rid of unpleasant experiences.

'Wash off' can indicate gradual natural fading, not just immediate cleaning.

Reflects the transient nature of things applied temporarily.