Will it change how the fabric looks or feels?
It should not. The coating bonds to individual fibres rather than sitting on top as a film, so colour and texture stay as they were.
Does it make fabric stain-proof?
No — it buys you time. Liquids bead on the surface instead of soaking straight in, so a spill blotted promptly usually lifts without a mark.
How long does it last?
It wears with use and cleaning. Areas that get sat on daily will need re-treating sooner than a guest room.
