Cleaning 
To clean Leather Gloves or Leather Belts, first choose a cleaner that will help preserve the natural lubricating oils instead of stripping them. For example, saddle soap is a commonly used product for equestrian tack. It is meant to be used as a cleaner and a protector from moisture, but it strips the leather of the oils in the process of attempting to do two jobs at once. The cleaner of your choice should not leave any greasy residue behind. Residue makes leather susceptible to bacteria and can break down the stitching of your item. Before applying anything to your leather item, be certain to test it out for effect and possible color distortion on an area that isn't visible to the eye.

Conditioning 
Leather conditioners are meant for occasional use. They contain fats and/or oils that help lubricate leather and replenish the suppleness. Look for a product that will penetrate the strong fibers in leather, but beware of any that include petroleum or mineral oils. While petroleum by-products won't damage your leather immediately, they do over a period of time. Again, just as with cleaning, keep on the look out for thick, greasy conditioning treatments for the best care of your leather Gloves and Belts.

Polishing 
Polishing is done for special occasions when you want a more glossy finish on your leather. There are a couple things to be wary of when purchasing a polishing agent. Some products contain coloring factors that will brush off on things you come in contact with. Some products also have a tendency to clog the pores in leather or dry leather out. Just as with cleaning, be sure to test out the product on a small area and when ready, buff to a shine.

Protection 
Moisture barriers are extremely crucial in preventing rain or other liquid hazards from damaging leather. Stiffness and spouting will happen if leather isn't protected beforehand. There is a drawback in protecting leather with a moisture barrier product. They tend to fill in the pores with a greasiness that makes cleaning, conditioning, and polishing difficult, but it's a necessary process to ensure leather isn't destroyed. Periodically apply a moisture barrier and allow it time to penetrate and dry before using your leather item. 

Removing Mildew 
To remove mildew from leather, create a mixture of one-cup rubbing alcohol per one-cup of water. Wipe the mildew area with a cloth dipped in the diluted alcohol, then allow it to dry. If the mildew persists, use mild soap and water that contains a germicide, then remove with a clean dampened cloth and allow to dry. 

Wet Leather 
An important key to keeping leather in top-notch condition is to treat wet leather before it has a chance to dry. Remove any dirt, mud, or other stains with a cleaning agent, then condition while the pores are still fully responsive. It is critical to remember that leather should be dried away from heat.

Storing Leather 
Remember that leather is a natural material and should never be stored in plastic because it encourages the growth of mildew and bacteria and will ruin the leather. Always store leather in cool and dry place. 

Some types of leather 
The most commonly used leather types are cow leather, sheep leather, buffalo leather and ox leather. Of these, the most expensive is cow leather, followed by buffalo leather, ox leather and sheep leather respectively. Sheep leather is quite famous for its softness and mostly used in leather garments; however due to its smaller overall size, it cannot be used for the long coats for which cow leather and buffalo leather are widely used. 
Belting leather is full-grain leather that was originally used in driving pulley belts and other machinery. It is often found on the surface of briefcases, portfolios, and wallets, and can be identified by its thick, firm feel and smooth finish. Belting leather is the only kind of leather used in luxury products that can retain its shape without the need for a separate frame; it is generally a heavy-weight of full-grain, vegetable-tanned leather.
Patent leather is leather that has been given a high-gloss finish. The original process was developed in Newark, New Jersey, by inventor Seth Boyden in 1818. Patent leather usually has a plastic coating.