SG-4 is a one step priming agent intended for use within the DIY leather restoration system. It simultaneously cleans, corrects pH, and increases adhesion for the subsequent coloring process. It is suitable for use on all types of leather except suede or nubuck (if you are converting a nubuck leather, please consult with us regarding application method). It can be wiped on, or scrubbed in with a gray abrasive pad, depending on leather condition or presence of adhesion inhibitors.
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