Originally Posted by
Roger Koh
>>> I would characterize the situation as dry rather than greasy - I suspect it's more the salts from the sweat than any body oils that have been causing the issues. I don't find the minor discoloration particularly bad, so would the following make sense?
A4 Heavy (Periodic Cleaning)
CleanStrong-4.3
Clean-3.8
Rinse-3.0
Hydrator-3.3
Fatliquor-5.0
Protector-W+
Picture #1 shows leather damages from sweat (when read with a pH meter would shows the shifting of its pH value from 3 to 5 to much higher) and will need to be pH balance back to its chemistry pH integrity. Leather is an “amphoteric” material, that is why the fermenting sweat affects the leather protein fiber, while the other leather constituents like the tanning agents, dyestuff and fatliquor remains unchanged. The shifting ionic positive (+ve) protein fibers loses its attraction towards the ionic negative (-ve) leather constituents that leads to the denaturing of the leather that reveals as mud cracking and most possible test with dye bleeding.