Leather Doctor® Kit-N3.ws, nubuck leather water stain removal kit is formulated to remove water stains from a clean source as the results of destabilizing the leather pH equilibrium. The side effect of alkaline overexposure manifests as marks and rings behaving like litmus paper. The darkening rings are leather constituents that breaks bond with the protein fiber and migrate forming the outer ring. Acidifier-2.0 neutralizes the alkaline overexposure recharging the protein fiber ionic positive to re-attracts the ionic negative leather constituents. The leather is saturated and dwell up to 72 hours for extreme cases to facilitate redistribution and wicking up foreign contamination. A stretched paper towel covering without airspace helps trapped foreign particulates instead of remaining on the leather surface when dry. Water stain marks from clean source are clean with Clean-3.8 to remove surface residue prior to Acidifier-2.0. Hydrator-3.3 helps to redistributes the inter-fibrillary colloidal water movement; helps reduce surface tension for a more even appearance prior to fat and oil replenishing. Inspection after drying will determine whether additional ring marks need to be removed with redox (reduction-oxidation) treatment accordingly, example when water moves through vegetation or plants material such as wood may pick up browning cellulose which require CleanTannin-3.5 and metal such as iron may pick up rust may require CleanTarnish-1.3. When all possible stains are removed, Fatliquor-5.0 follows to rejuvenates and imparts leather with softness and suppleness when dry. The surface wear of the nubuck is greatly reduced with a rub-resistant Protector-S that enhances a non-stick silky-feel to shield against sticky soiling. Note that the mentioned product suffix number denotes its pH value in this holistic leather-safe nubuck pH stabilizing system to eliminate water stains. Note: Leather is an amphoteric material while the other leather constituents like the tanning agents, dyestuffs and fatliquor are not. The iso-electric point (pI) of leather averages pH 4, water averages pH 7. Between pH 7 and pH 4 there is an ionic difference of 1000 (one thousand) times. Foreign pH influences below the pI charges the protein fiber ionic positive while above the pI causes the protein fiber to shift ionic negative. The ionic leather constituents and the protein fibers behave like magnets, unlike poles attracts.
This kit comes with reduced weight option to save on shipping thus the 250ml concentrate ratio such as Clean-3.8, Acidifier-2.0, Hydrator-3.3 and Fatliquor-5.0 has to be filled up with distilled water prior to use.
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