The Velvet and Poli finishes naturally have a closed surface and therefore do not need to be protected before first use. The Anticato finish, on the other hand, has a rougher surface that is not closed, making the material more sensitive to stains. It is therefore necessary that this top, before it is installed, be treated by a professional with a stain stop suitable for quartz composite. Depending on the type of impregnating agent chosen, the worktop may become slightly darker in color.