verb (used with object) 1.to improve with new touches, highlights, or the like; touch up or rework, as a painting or makeup.
2.Photography. to alter (a negative or positive) after development by adding or removing lines, lightening areas, etc., with a pencil, brush, or knife.
3.to dye, tint, or bleach (a new growth of hair) to match or blend with the color of an earlier and previously dyed growth.