i bought some auto-glym leather cleaner and leather care cream. i have an s4 with alcantera trim. the leather is in good condition but want to keep it that way. the instructions on the bottle recomends testing the product in a small unseen area first. what am i looking for? how long should i leave it? it also recomends testing for dye-fastness with a water dampend towel. again, what am i looking for? what is dye-fastness? (running/blotching of colour?) the alcantera is in good condition altho is starting to "pook". not knowing a better way to describe it ive added pics below. i was wondering if there is any way to fix this whith a swade comb or somthing. also should i apply any leather care to the alcantera. thanks in advance.