Anybody know what the best Alcantara cleaner is? 
How old is the car Justin? The thing with alacantara is that it does tend to loose a bit of colour if you use some
Really strong stuff! I've only seen this happen once of twice mind out of hundreds
My advice would be to use a light mix of water and Megs carpet and interior cleaner-the reason for the Megs is that your meant to use it from the bottle I.E spray it straight on, this means it's a fairly safe mix as it is so just use a small amount a a dilute down to be extra safe, try it on a small area 1st just to make sure you get no colour run, I doubt you will but there is always the risk,
Spray it on and work it in lightly using a soft brush and then vacuum the area to remove most of the fluid you just sprayed on, then use a neat water mix or some more interior cleaner to remove the rest of the crap you just brought to the surface using the vacuum, repeat process as required
You've got my number if you need any help
