Well Like i pointed out in that thread those two products, redrelief, and stain magic have a very limited working time.
5 min. on top of that if you mis mix them they are useless. So fine mixing beaker/pipet is a must.
I generally mized 10cc each then put it in a squeeze tube topped bottle.
One is I believe about 45% hydrogen peroxide, and the other is a catylyst to speed up the chemical break down of the dyes. Hence the very short working time of the two. When you add steam and heat that chemical reaction accelerates and further decreases the working time. but it is nessisary to achieve the best results.
It's hard to emphisise how importent those steps i outlined are. These chemicals are the best in the industry but they are finicky. as your sig says. "Auto detailing is an art it's not for everyone" So are these chemicals.
step one would be light spritzing with a comercial slurry agent. Ie point blue, clean green, dry slurry. Lightly brush in. very lightly. The idea is not to scrub but to besure the detergent is coating all the fiber surface it can. Scrubbing will not likely produce a noticible beninifit for you. It will how ever give you that rubbed mark shown in your picture above. many times those are permant. Trust me the chemical will do far more evenly distributed in 20 min than an hour of scrubbing will gain you.
Rinse out with a fiber rinse. this will offset the ph of the slurry Cleaner, which is a must for these kinds of soils. usually a good slurry will run a 10 on the ph scale, as we are dealing with a synthetic fiber there is nothign wrong with that. the fiber rinse will usually be a 3.5 or a 4 on the ph scale. bringing the fiber as close to ph of 7 as you can.
3rd step is to rinse again with water. yep because the fiber rinse will interfere with the two part red remover.
Dry stroke like mad... remove as much trace of moister you can.
Now start your 2 part red remover following the guidelines i mentioned about it above.
some times it helps to let it sit for more than 5 min. but just so you know the complete chemical reaction happens in little over 5 min... so if you let it sit you'll need to ad more before you apply the heat.
the final most critical thing is to be absolutely sure you put equal parts of the two in your 2 part solution mix.
On a side note, there are a dozen if not dozens of dozen things that can set the dyes permantly. Unless dealt with. Knowing what you used, what your customers used and how to remove them before heat is applied is paramount. Before you try a chem like this you must get the fiber to as "virgin" status as you can.
highly acitic stuff like vinager, or highly alkaline stuff like seltzer water will set these stains in nothing flat. But depending on the fiber type you can get some of them out. IE if it is a poly, olefin, or solution dyed nylon then you will have some success.
if it is a skien/dip dyed nylon... the stain is likely permanant, the best you can hope for is a percentage of removal.