Just Refresh, Dulux Retail A new, premium one-coat paint from Dulux called One Coat Matt is quicker and simpler to apply than ever. With just one coat of paint, the new formula will give you the ideal finish. An additional coat could be required when applied over dark colours. Due to the increased thickness of the paint, one coat is all that is required to update your home in a fraction of the time and with less paint than two coats of Dulux Matt.