The Story Behind This Sofa
Fabric protection is worth understanding properly, because it is oversold by some retailers and dismissed entirely by others, and the truth is in between.
A stain-protection treatment is applied to the cloth after upholstery and works by coating individual fibres so liquids bead on the surface instead of wicking straight into the weave. It does not make a sofa spill-proof and it does not remove the need to act quickly. What it does is buy you time - often several minutes rather than a few seconds - which on a cream sofa is the difference between blotting a spill away and living with a mark.
It is invisible and does not change how the cloth feels. It wears off gradually, faster on the seat than the back, and should be reapplied every few years on a sofa in daily use.
What it will not do is protect against dye transfer from new denim, ink, or turmeric - three things that mark pale upholstery permanently regardless of treatment. Those need immediate professional attention, not home remedies.