If your intent is to bring it back to its original, then we should be looking at picture #5; the reverse unused areas.
In comparison with picture #1 - This looks like most of the fatliquor, wax effect and dye has diminished; besides the light surface scratches, stickiness and roughness mentioned after cleaning it.
I suggest a refinishing test is necessary to see how close we can bring the finish back to the original.
Test 1 - Hydrator-3.3 > Fatliquor-5.0 > Wax Effect-8.6
Test 2 – Aniline Dye-21 (dark brown) > Hydrator-3.3 > Fatliquor-5.0 > Wax Effect-8.6
On the actual cushion picture #1, the restorative cleaning will include the following process:
1] Degreaser-2.2 > Rinse-3.0
This process is to remove body contact oil, grease and sweat that may have contribute to the “almost darker in appearance” dissatisfaction.
2] The stickiness if it is from foreign contamination may be removed by above degreasing and rinse; otherwise has to be acidified with Acidifier-2.0 (pH 2.0) to neutralize alkaline over exposure.
3] Thereafter, either “test 1 or test 2 applies”.
4] The lost of shine, roughness will be restored by Aniline Topcoat-79Gloss.
Here’s the problem solving guide for reference. . .
Aniline Wax Pull-Up Leather :
Leather-Safe Problem Solving Guide-AW9
Leather Doctor® Aniline Wax Pull-up Leather – Color Refinisher, Degreaser & Tackiness Control – Kit Aw6.dt
Dark Brown
Roger Koh
[email protected]