For best results paint onto untreated, bare wood. Lightly sand the surface and dilute the first coat of Eggshell with around 10% water, followed by two full coats. Sanding in between dried coats will provide an extra smooth finish.
If painting onto previously coated woodwork, especially those painted with oil-based or polyurethane paints or varnishes, sand well to a matt finish prior to painting. Surfaces that have been previously painted with oil-based gloss paints can be overpainted with Earthborn Eggshell provided the previous coating is thoroughly aged (usually around 3 years).
If you are looking for advice on using Ecopro Eggshell you will find full data sheets, information and specifications here.