yeah, cheap fix i guess they would be ok, do they come with a top lacquer to fix? Or are they allready in a resin. problem with a liquid dye is fixing it, if its just dye in solution, theres nothing stopping it from either dissapearing into the leather or coming off on your armarnis. Ideally it needs to be fixed in place, this is done in leather production by using acids and alkalis to open the leather, then close again, locking the dye in place. Plus theres the gloss issue, whatever you use isn't going to have the same level of gloss, so its gonna appear shinier or matter, and still be visible. Plus plenty of leathers are printed with an artifical grain, the natural grain is removed in production to get rid of defects such as scrathes and brand marks etc, this is then filled with a polyfilla type substance, and sanded off, much like you'd fill a car dent. To make the leather look like Full grain leather, they then print it with a big roller, lots of temperature and pressure, and thats what you see on your seats, If you repair a mark, the print is likely to have been removed or will be shallower, meaning you'll be left with a visable difference. Some cars use full grain leathers, much more expensive to buy as raw material, and they need less finishing, so they appear more natural, but this is limited to high end cars such as the S class etc, renault, VW, most bmws and the like, get the cheaper corrected grain leather. Also be careful its actually leather, most people would be surprised these days how much of there 1000 quid leather option is actually leather, cos the artifical stuff is barely distinguishable to the untrained eye.
If you've tried em and they work, then fine, but on leather thats 15 yrs old and cracking its a bit like sticking a plaster on, when your arm falls off.
I feel compelled to reply Rich, seeing as i've been in the industry for 14 years, and trained at the british school of leather technology in northampton, doesn't mean you polishers aint a bunch of time wasting geekazoids though, that should be hanging out of females and not polishing your cars for 72 hours
