Know your leather
Most modern cars use coated (pigmented) leather; luxury cars may have semi-aniline or Nappa, which is more delicate.
Cleaning technique
Spray cleaner onto the brush, not the seat; work in small sections and wipe off immediately.
Conditioning
A water-based conditioner keeps leather supple without leaving greasy residue.
Mistakes to avoid
Magic erasers remove the protective topcoat; silicone dressings make seats slippery and shiny.

