This is how I would do it:
Step 1:
Use - d’Protein11.0™ pH value 11.0 is a protein based spotting agent for vomit, urine, egg, milk, cream on all leathers, nubuck and suede.
Step 2:
Use - d’Grease4.9™ pH value 4.9 is an aqueous leather-safe degreaser for all greasy soiled leathers, nubuck and suede.
Step 3:
Use - d’Smoke4.7™ pH value 4.7 is a leather-safe soot and smoke deodorizer booster that works with d’Grease4.9 on all leathers, nubuck and suede.
Step 4:
Use - clean3.8™ pH value 3.8 is a leather-safe aqueous general purpose cleaner for all lightly soiled leathers, nubuck and suede.
Step 5:
Use - rinse3.0™ pH value 3.0 is a leather-safe aqueous mild acidifier and all purpose rinse for all leathers, nubuck and suede.
Step 6:
Use - leatherScent’B™ is a leather scent non-stick tactile feel conditioner to enhance a soft natural buttery feel.
Roger Koh