The bovine layers before being immersed in the tanning drums are prepared with some preliminary steps that are used to strip the leather in order to start the process of selecting the hides and the external layer of the dermis, which in the case of Pelle Frau® is always "full grain". Soaking, liming, fleshing and splitting allow the hide to absorb the tanning materials in its entirety, this combination of chemical and mechanical actions stabilizes the skin organically.

After a careful selection of Pelle Frau®, it is the moment of retanning. From the combination of chemical and mechanical actions aimed at defining the type of article re determined the final aspects of Pelle Frau®, hand, structure, body, grain and shine.The hides are dyed with anilines by immersion and through the mechanical action of the drum. To give greater elasticity, softness and resistance to tearing, the hides are greased. The staking softens the hand of Pelle Frau® and gives a more or less visible grain to the surface. Pre-drying and drying eliminate moisture from the leather, the air drying completes the process and with the fulling it softens and re-hydrates the Pelle Frau® leather to give it its characteristic touch.

The finishing process is the combination of chemical and mechanical actions to uniform the color and protect the external layer. This phase concerns only pigmented and semi-aniline leathers and is aimed at improving technical performances and final look. The protection given by spray or by hand, can have different compositions: pigmented, transparent, with oils and waxes, each one gives a special aesthetic appearance to each of the collections.