How would I clean a Leather couch that has been in storage for a long time?
You need to use a good quality water based foam leather cleaner. DO NOT use anything containing oils, waxes or silicones. (Most ‘conditioners’ contain waxes or oils so should not be used) and furniture polish (Pledge etc)contains silicones which will destroy the finish on the leather. BABY WIPES are the worst thing you can use as they will destroy the finish on your leather. They are very strong alkiline cleaners to neutralise urine (acid) on babys skin so they are not the right thing to use on leather. Saddle soap is too harsh to use on todays furniture. A lot of leather wipes contain chemicals which will also destroy the finish or leave residues on the leather which will damage it. They are not cheap in the long run as you would need a lot to clean a whole leather sofa. A bottle of foam cleaner should do your furniture 1-2 times. Fairy liquid contains more salt these days to get dishes clean and this will break the finish down on your leather. This has been verified by the manufactur