ICAPGRADE P4 is an oil-wax based polishable preground formulated to meet the needs of correction and smoothness of natural leathers, with particular effectiveness on full grain, snuffed leathers or leathers with small surface imperfections. Due to its oleo-waxy nature and amphoteric (cationic/anionic) charge, this preground is also suitable for inclusion in cationic blends within traditional production cycles.
Polishable pregrounds are key products in the finishing of leathers intended for uses where surface uniformity and the absence of visual defects are crucial: they allow porosity, small grain marks and irregularities to be leveled, improving the flatness of the substrate and providing an optimal base for subsequent coats of color or topcoat.
Key features and benefits
- Excellent filling power: fills in small imperfections and porosity, making the surface smooth and even
- Good masking power: improves the overall appearance of the leather before the finishing steps
- Compatible with cationic systems due to amphoteric charge
- Ideal for nappa and natural leathers: enhances the authentic essence of the leather without compromising breathability
- Ease of application by roller or spray, allowing uniform, controlled layers
- Recommended 12-hour rest before felting to promote film stabilization and optimize the grouting effect

With a dry residue of about 15 percent, ICAPGRADE P4 is a balanced solution in terms of filling and thickness control, ideal for those who want homogeneous performance, surface softness and natural aesthetics
ICAP Leather Chem – When the base makes a difference.


