Dear Pioneer,
All grease stains have to go from the inside out no matter how long it’s been there.
Those greasy dark headrest stains is a common sight on Nubuck.
Nubuck is highly absorbent, so those greasy stains may have soak through the whole thickness equivalent to between 19 and 27 sheets of normal newsprint.
Combination of deGreaser4.1™, superCleaner4.0™, cleaner3.8™ and rinse3.0™ will eventually draw out these grease and oil through the wicking process.
These oil and grease are accumulation through the years usually 3, 5 to 7 years that I have worked on.
It may take 3, 5 to 7 wicking process or double the times (it depends – no magic all logic with hard work).
Eventually they will be out with satisfaction.
The pH of these cleaner works in harmony without destabilizing the leather chemistry integrity.
There is no cleaning risk; however what ever oxidation taken place through time may have cause a discoloration yet to be revealed when all the grease is removed.
It is usually the alkaline residue of cleaners that cause discoloration problem.
If no previous attempt have been made, through my experience they will turn out good with the final process with fatliquor5.0™.
Fatliquor5.0™ can be diluted up to 10 parts with distilled water if spray on dry surface to adjust the color-tone.
If it is to be Re-Dye/Re-Color, fatliquor5.0™ is preferably to apply after the Re-Dyeing/Re-Coloring process.
It is never wise to do a refinishing for the purpose of a cover up those greasy stains.
Nubuck has to be absolutely clean from inside out before you can attempt a refinishing.
Nubuck Re-Dyeing / Re-Coloring
anilineDye™ provides a transparent natural or unfinished look.
nubuckColor™ provides better coverage with opacity.
To refinish the same color or one tone deeper I prefer to use nubuckColor™.
If it is to change color from tan to dark brown I will use the anilineDye™ for penetrating deep into the leather.
Then follows with the second or third application with nubuckColor™.
colorFix™ is to set the dyes and fix the micro-color.
The anilineDye™ advantages is really a deep re-dyeing all the way to the roots (so to say).
The disadvantages is that it is not as colorfast as the nubuckColor™ and may bleed with solvent spotter resulting in rings.
The nubuckColor™ has covering power and more colorfast than anilineDye™ but loose out in super fine feel.
It has no bleeding problem and with a good colorFix™ crocking will be greatly reduced.
Application Technique
Set your air pressure at 80 to 100psi.
I use either a DevilBiss JGA-700 or a Paarche H70089 depending on the surface area.
Test cone shape spray pattern to increase atomization and decrease feed to produce a dry application.
Rotate dry application in a circular motion with continuous brushing deep into the nap without over flooding in between naps.
Repeat all spray application in this manner a section at a time using either a nubuckBrush2™ or suedeBrush3™ accordingly.
Grooming
When dry brush and groom for a “finger writing effect”.
Fatliquoring
An even application with fatliquor5.0™ will soften, strengthen and enrich color further.
Sensuous Conditioning
Finished by spraying leatherScent’S™ for a silky feel, non-stick surface with the unforgettable classic leather scent.
See attached pictures.
Any further questions are welcome.
Roger Koh
IICRC#942 LCT MTC MSR
Leather Doctor System®
[email protected]