I also appreciate Rambo's comments, and do take them all on board.
However, I do not know what type of leather Ray cleans, protects, restores, etc;
What I do know is, if you do not know what type of leather you are working on, you may soon own a leather sofa or whatever.
Not all leathers can be cleaned, let alone protected, with the same generic products.
Let me try and explain a little bit.
There is Nubuck leather (N), also called Distressed, Bomber or Suede, this is actually an Aniline leather on which the surface has been brushed, and has a similat texture to a velvet on leather. Many people confuse Nubuck with Suede, although in fact Suede is the flesh side of a piece of leather, and Nubuck is an effect that is done to the grain side, making it incredibly soft.
In Australia, I have found that most upholstery is Nubuck, whereas Suede is for clothing and bags, etc;
Aniline (A), also called Natural, Pure, Naked or Unprotected Leather.
These are coloured with a transparent dye stuff that allows you to see the actual surface grain & markings.
Both of the above leathers are the softest, most luxurious leathers that you can buy, as well as being the most expensive.
They are also the hardest to maintain, clean and restore.
Then there is Pigmented Leather (P), also called Finished, Semi Aniline, Everday, Protected or Painted Leather.
Simply put, it has a painted (pigmented) surface, then usually a Urethane finish applied over the top, which gives it more resistance to spills, kids, and other common soiling.
It is a harder to the hand feel, and more forgiving.
It is the biggest seller on the market, and relatively easy to repair, compared to the above leathers.
It is also the cheapest, beware of the Chinese and other Asian imports, some of which may be cured in urine, be it human or animal.
After this, you get into the exotics such as Oil pull-ups, Wax pull-ups, Bycast, etc;
Bridgepoint put on Leather courses, as do Lonnie McDonald, Leather Master, Fenice and no doubt, many others.
Before I touched any leather, I would do a course so as to distinguish the various types of leather you will be working on.
A lot of leathers can look the same, and if you use the wrong products on them, you can ruin them.
Having said all that, Leather is a great way of earning a lot of money, with no machinery outlay, only product and time.
Most high class premises not only have leather, but also rugs, again high income earners $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
For more info, check out Lonnies web site, (Leather Pro), Leather Master, etc;
Hope this helps, and sorry for being so long winded.
Cheers,
Shorty.
PS::: There is also a vinyl product on the market now that is easily confused with Aniline Leather, if you can look at the back, the webbing gives it away
PPS::: One of the most informative courses I have ever done on leather was Tony Wheelwrights Leather Restoration course, but it is advisable to first know what you are talking about before jumping in.