Poem with an explanation: scrub, scrub, scrub

In the morning,
scrub, scrub, scrub.

In the evening,
scrub, scrub, scrub.

The blemish remains.

 

This is a poem about a person dealing with guilt.  Symbolically, it is described as a person trying to get rid of a blemish on their skin.

The person goes to repeated (morning and evening) and extensive lengths (scrub, scrub, scrub) to get rid of the blemish.  This represents the person trying to get rid of the guilt they have.  The scrubbing is their mental attempts to deal with what they have done.  They try to “scrub” it so that it doesn’t seem so bad and so that it will go away.  They don’t succeed though.  The guilt they have remains.