GREIBOTAN PRF is suitable for use across a broad range of retanning applications wherever selective filling of loose or flat leather structures and improved buffability are the primary requirements.

In cationic retanning before neutralization, GREIBOTAN PRF is used in combination with mineral tanning salts, where its filling action at this early stage of the retanning process ensures that the albuminous substance is deposited evenly within the fibre structure before the subsequent anionic retanning agents are applied. This sequence helps to achieve maximum filling depth and consistency across the full hide, including the loosely structured belly and flank areas.

In anionic retanning, GREIBOTAN PRF can be combined with synthetic and vegetable tanning agents, where it complements the filling and structural properties of the retanning recipe and contributes to a more uniform and compact leather body throughout the full cross-section of the hide.

For suede and nubuck production, GREIBOTAN PRF is particularly valuable in its ability to improve the buffability of the leather surface. The even distribution of the albuminous filling agent within the fibre matrix ensures a consistent fibre density that translates directly into a uniform, fine nap and reliable surface quality after buffing, reducing the risk of uneven plush, bare patches, or surface defects in the finished article.