Apply a thin layer of Toko Pro to the back of the leather with a spatula or glass burnisher and smooth it over the surface. Then remove any excess material. When the Toko Pro starts to dry, rub the surface to a smooth finish. You can recognise the optimal moment to stop when the whitish colouring starts to become transparent. After drying, you can polish the surface with a folded cotton cloth for an optimal result. There is no need to apply force to the leather, it is enough to gently stroke the material.