>>> 5-5A Overall pic shows oily right arm
>>> 5-5D Shows oil stain on right arm
By Degreaser-2.2 > Acidifier-2.0 > Hydrator-3.3 > Fatliquor-5.0 system.
Degreaser-2.2 need to penetrate and saturate below the stain.
As the reverse of the leather is more porous thus holds more grease and oil than what we see on the tighter grain surface, is just like we see an iceberg floating on water is only the tip of it. It also needs enough volume of the Degreaser-2.2 to emulsify the oily or greasy stains beneath.
Surface suspended soiling is removed with Acidifier-2.0 both as rinse, bleeding control and pH balancing the protein fiber ionic positive (+ve) to strengthen the ionic attraction of the ionic negative (-ve) tanning agents from reverting the leather to rawhide. A sign of leather denaturing is the detection of a tacky or slimy surface and need to be rectified back to a squeaky feel with Acidifier-2.0. Hydrator-3.3 function is for below surface moving up the suspended soiling particulates to the surface to be towel extracted while damp. Continuous wet phase is by Fatliquor-5.0, to replenished original fatliquor while the combine moisture level is around 25% and work with Eraser-4 when the leather is crispy dry.
>>> 5-5B Shows some dry and cracking conditions
>>> 5-5C Shows very dry and severe cracking of seat cushion.
By Degreaser-2.2 > Acidifier-2.0 > Hydrator-3.3 > Fatliquor-5.0 system.
Although the system is the same as above the emphasis is different paying more attention to the potential exaggerating of the severe cracking problem. As the fatliquor moisture level is lower at the damaged areas it should be replenished as soon and as much immediately after Hydrator-3.3.
Acidifying as a tacky or slimy control, hydrating to relax the fibers for immediate fatliquor replenishing is an over riding consideration from further cracking the weak and damaged leather structure.
Adhesor-73 is recommended as sealer to avoid adhesion problem.
>>> 5-5C Shows very dry and severe cracking of seat cushion.
Internal structural repairs will need Impregnator-26.
Surface repairs will need Bond-3D and others depending on the extent of damages
Micro-54 may be used to hide repair damages.
Aniline-76 may be used to beautify the finishes.
AnilineTop-76S may be used to adjust the luster level.
Need to confirm if you need Aniline-76 as well and amount.
Roger Koh
Leather Care Consultant / Practitioner / Instructor
[email protected]