A fresh “deep clean” of Union Street has been launched by the city council.
This marks the third grime-busting blitz since “Operation Union Street Rejuvenation” was launched last September.
The power-washing of pavements, which is being carried out by a specialist local firm, is expected to last around 10 days.
The first phase had included the upgrading of benches and lampposts and the creation of a team dedicated to looking after the area.
The next phase will focus on improving the fabric of historic buildings as part of a Conservation Area Regeneration Scheme.
The longer term Masterplan vision is for pedestrian priority between Bridge Street and the Castlegate.
Marie Boulton, the council’s cultural spokeswoman, said: “Union Street is continuing to benefit from the enhanced cleaning regime that forms part of this City Centre Masterplan project.
“This is the third deep clean since its launch last September and is a direct response to calls to clean up Union Street.
“The next phase of the project will focus on repairing and improving the fabric of some the street’s most historic buildings as part of a Conservation Area Regeneration Scheme.
“The Council secured and matched an award of £1.2 million from Historic Environment Scotland and we are now getting to ready to work with building owners.
“The Masterplan vision includes bringing any empty buildings on Union Street back into use, with improved public realm.
“Our goal is to restore full vibrancy to what remains one of the most spectacular main streets in Europe.”