"Leather conditioner" refers to a product that helps to keep leather soft, moisturized, and protected. It is used to prevent leather from drying out, cracking, or getting damaged, and to extend its lifespan. Full definition
It holds up well against everyday wear and tear, and then it becomes practically new again with a good leather conditioner. (cupofjo.com)
If you assume that the leather boots came to be dry after the procedure, you can add some natural leather conditioner to offer moisture to the leather. (red-amethyst.com)
Every 2 - 3 shines, apply a layer of leather conditioner to the shoe after this step. (lawyerist.com)