Solution diluted in gelatin. In water gilding, it is traditionally utilized as a binder in the bole. In pictorial techniques, it is one of the primary components of the preparatory layers of paintings on canvas and wood panel. In restoration, it is commonly used as an adhesive and consolidant and - as for the most part of animal glues - preferred by synthetic metals and waxes, as well as for its absolute reversibility historically experimented for its homogeneity with materials that make up a painting.