Please refer to the Leather Problem Solving Instruction/Matrix and consider row #A6 and B1, before attempting B13 (due to leather dryness).
Penetrated stains will need this help . . .
F - Reverse-Transfer Suspended Soiling:
Capillary action or wicking process is deployed to move penetrated and suspended soiling to resurface by reverse-transfer technique with Towel-T5. First the leather structure needs to be hydrated to facilitate colloidal water movement within the structural inter-fibrillary spaces, it will also require saturating Hydrator-3.3 to move the suspended soiling upwards. As it wicks through the Towel-T5, soilings are trapped instead of still remaining on the leather surface to be easily peeled off. In practice the following steps are adopted -
Instruction . . .
F1- The thickness of the leather is hydrated to an optimum level with moistures oozing out when gently pressed between thumb and fingers.
F2- It is then cover up with plastic wrapping to control evaporation and let it dwell up to 72 hours to loosen and suspend foreign soiling particulates
F3- The plastic wrapping is removed and replace with Towel-T5 without airspace to trap soiling as it dries instead of remaining on the surface. For it to stick onto the leather surface, the Towel-5 is spray wet with Hydrator-3.3 and brush out the air space with horsehair Brush-1 at a 45 degrees angle without tearing the towel tight. As it dries it will shrink back and tighten further sticking tight onto the leather surface. Recommend that Fatliquor-5.0 is replenished in combination at this stage especially if the leather has already show signs of cracking. Note that dried leathers with insufficient fatliquor (less then 15% fat and oil) content, when dry again will likely accelerate any existing cracking.
F4- Towel-T5 is peel off when crispy dry and surface residue erase with Eraser-4 or Eraser-5 for suede accordingly prior to fatliquoring.
F5- Fatliquoring continues and is repeated with each almost drying cycle until saturation and is leave to slow natural drying.
F6- Fatliquored dried surface residue is driven into the leather structure by brushing in conjunction with Hydrator-3.3 until milky residue if any turns crystal clear.
F7- Surface clear moisture is extract with a cotton towel until towel shows dry.
F8- Staking, stretching, massaging or cross flexing one more time before the leather is completely dried for the desired suppleness.
